SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial
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  1. #1
    Member Travelller's Avatar
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    Picture SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial

    The 62MAS Re-Issue
    I think it's safe to say that anyone that has any interest at all in Seiko and / or diving watches has already heard about this one. In fact, it's hard to find a watch-blog right now that hasn't done a write-up on it. A couple of obvious reasons are that Seiko just started rolling out the production units. Basel only had prototypes on hand, behind glass cases, hands-off for all but the most VIP publications and their editors. Secondly, it's a very exciting release for pretty much all Seiko / Prospex fans, given it's amazing faithfulness to it's origins, Seiko's very first diver, the 1965 "62MAS" (6217-8000/1).


    click-the-pics for hi-res goodness


    A quick look into the Seiko-Diver's history
    The history of Seiko's involvement in diving watches doesn't reach quite as far back as Rolex or Omega's, but interesting all the same, even if not represented by the likes of COMEX or the U.S. Navy's Sea-Lab or Cousteau et al. Rolex had the 5513 Submariner out and Omega was already on their 2nd gen of the Omega Seamaster 300 when Seiko released the 62MAS. However things moved on quickly from there, with the 1968 "Diver's 300M" (6215-7000), 1975 "world's first titanium cased diver's watch, the Professional Diver's 600m" (6159-7010 - Grandfather Tuna), 1978 The Professional Diver's 600m, the world's first saturation diving watch featuring a quartz movement.



    Perhaps Seiko's most interesting milestone in (pre-dive-computing era) diving watches was the monocoque case solution to the Helium-saturation problem, avoiding the need for an HEV which the other manufactures implemented (Doxa, Omega, Rolex, ...). But Seiko can also be credited with other dive-related firsts; New to me was the fact that the "accordion" diving strap used by many companies was actually invented by Seiko! There's also little doubt that the Quartz giant played a definitive role in the dive-computer era, including the first Dive computer in 1990.

    In terms of "pure" diving watches, the Marinemaster-Professional series is the most popular today. The 300MM as well as the 600 and 1000M models making use of the various movements in Seiko's portfolio (mechanical, Spring Drive and Quartz). The two obvious design changes between the 62MAS generation and the Diver's 300m is the move to a monocoque case and re-positioning the crown to the 4 o'clock position. For the 600m they switched to a Ti case and added a protection shroud (and if I'm not mistaken, were the first to use Ti cases.)




    8L35 workhorse
    "62MAS" was Seiko's official designation consisting of the first two digits of the movement (6217) and MAS from "Seikomatic 395 Selfdater" a designation associated with a model that appeared just before the 6217 (it's predecessor, the "Seikomatic Silverwave" having the simplest designator, "MA").
    The SLA017 has no such designator (known to us, in any event). It does however use Seiko's current mechanical workhorse, the 8L35. There's quite a bit on the Net regarding this movement so I will only touch upon the basics. The 8L35 belongs to the 9S5 movement family introduced in 1998. The "9S" are dedicated to the Grand Seikos while the 8L is a "less decorated*" and "less adjusted" duplicate of the 9S. The 8Ls are used in the Prospex line (and possibly other Seiko lines). The 8L35 is in use in several current models, such as the "Marinemaster Professionals" 300m (SBDX017) and 1000m (SBDX013/14). Going upwards we have the 8L55 "Hi-beat" for a LE of the MMP (SBEX005) and a (slight) step downwards, the 6R15 for the "Diver Scuba" series (SPB051J/SBDC051, SBDC029/31/39).

    The 8L35 has a PR of 50hrs and suggested accuracy of 10-/15+ (vs. the 6R15 rated at 10-/25+). Mine seems to be currently around +10s but I haven't worn it enough and expect it to settle a little, maybe down to +6~7s which is more than satisfactory. My SM300MC and Seadweller 16600 are also in this range so there's no reason for concern. Besides the reasonable accuracy, the movement has essentially been in production for 20 years without any major modifications.
    *Thanks to Yosson and his photo of the movement as well as his feedback on IG, the modern "8L35B" has a nicer finish than the originals and therefore the term "unfinished" is no longer applicable.




    It's the "new-and-improved" 62MAS...
    Compared to its ancestor, the SLA017 naturally makes use of Seiko's advancements over the past 50 years. Most notable are the improved movement with longer PR, hacking seconds, better depth rating (150->200m) unidirectional bezel, screw-down crown, sapphire crystal and (what certainly must be) a higher level of fit & finish all the way down to the dial. Seiko used their updated Lumibrite (Tritium has excellent luminosity but only for say, seven years...). Finally, an increase in case-size given today's preferences (37 to 40mm). It's also quite satisfying knowing that the watch is assembled by the same team(s) that work on the Grand Seiko mechanical watches at Seiko's Shizuku-ishi Watch Studio (Morioka Seiko Instruments).



    At the same time, Seiko went out of their way to honor the original with this "re-issue", from the case finish down to the Dolphin* on the caseback. Seiko even supplied the same style of "waffle" silicone strap that came with the ~2nd iteration of the 62MAS (the first batches were delivered with so-called "Tropic Rubber", most likely the very first rubber strap ever made).
    *On a side-note, the Dolphin made a short appearance on a few Seiko divers "in between" Seiko's more common Tsunami wave. The reason for the switching back and forth is unknown (...to me, at least).




    Wrapping it up
    When I saw Seiko's announcement for this year's Basel, it took me all of one minute to decide I had to have this watch. I'd been hunting for a Prospex for over a year. I tried several from the Marinemaster Pro series (300m MM, 1000m Tuna) but for one reason or the other I couldn't commit. Et voila, the SLA017 was the definitive answer! I love the vintage look; much of my humble watch collection is based on vintage tributes or pieces that essentially haven't changed, like my Speedmaster or Sea Dweller ... timeless!

    Add to that the meticulous execution of every detail, almost rivaling my SBGA125, from the domed crystal to the (green!!!) lume to the bold lines of the radial-brushed case. In fact, it's almost perfect. Had Seiko used an applied logo and went with an embossed caseback, it would have been sheer perfection... .

    But darn if it ain't close enough ...and yes, well worth the price of entry.




    ********


    Let's enjoy a closer look at this beauty...











    Case dimensions are spot on: Diameter 40mm, Thickness 14mm, Lug2lug 48mm, lug width 19mm, weight 110 grams







    Choices, choices... but not for me; the waffle strap is the way to go - retro! That and maybe some Tropic rubber... yesss!



    Among great company...







    The "upgraded" lumibrite on the SLA017 is dramatic and may be the one to finally beat the PAMs...





    ********


    Annex: The great bracelet debate
    A.K.A. bracelet-gate...
    There's quite a bit of disappointment in the community regarding the supplied bracelet. It's not as functional as the one provided with the current production MM300 and some even consider it to be of inferior construction. You will find more than enough trash-talk over at the "SLA017 owner thread". In my personal opinion, the bracelet was an afterthought. In any event, I would grade it as the same level of quality as the one that came with my €300 Steinhart...

    ***EDIT*** Since the Steinhart's rudimentary, "double-locking fold-over clasp" bracelet does not have a diver's extension*, the Seiko bracelet is clearly an improvement - I therefore stand corrected!
    *Seiko's extension-hinge is clearly visible, bottom-right side


    Seiko's offering...








    Steinhart's




    Moving up the quality-scale: Mühle Glashütte S.A.R., comparable in price to the SLA017...




    The best of (my) best - the SM300MC's bracelet...





    ********
    Last edited by Travelller; July 18th, 2017 at 00:08. Reason: Correction in Annex (Bracelet Debate)

  2. #2
    Member picklepossy's Avatar
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    SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial

    Thank you for the wonderful post and fabulous photos.


    Instagram: @picklepossy
    Last edited by picklepossy; July 17th, 2017 at 03:40.
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    "Time is the only true unit of measure, it gives proof to the existence of matter, without time, we don't exist."

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    Member impalass's Avatar
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    Re: SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial

    Amazing pics, superb write up, thanks for taking the time.
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    Member kevinkar's Avatar
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    Re: SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial

    I like the watch a lot. I am not a fan of the "Diashock 26 Jewels" line and wish they'd leave that off as that really adds nothing to the face and just makes it too wordy.

    I disagree with your statement "Steinhart's - for all intent and purposes, identical" as that is missing the release buttons which is definitely different and thus not "identical". A niggle perhaps but I'd argue against your assessment there.

    But it's a nice watch for sure. Lots of attention to detail and very tool-like. Sharply defined edges everywhere, good font selections and no stupid Prospex X logo! Yay!

    One other personal niggle and that's the rectangular lume on the second hand. It's bound to disappear while it's over the hour markers which could slow you down a bit when trying to see it underwater or in low light but otherwise there's not a lot here to put in the negative column.

    Very nice watch and nice review.

    Thanks!
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  6. #5
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    Re: SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial

    excellent buddy! great for those still considering haha
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  7. #6
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    Re: SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial

    How much can one buy this watch for and where can they buy it? When will this watch be available?

  8. #7
    Member slow_mo's Avatar
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    Re: SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial

    Great photos and great write up!
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  9. #8
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    Re: SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial

    Quote Originally Posted by hoss View Post
    How much can one buy this watch for and where can they buy it? When will this watch be available?
    Think it's mostly sold out. Only 2000 pieces produced.

  10. #9
    Member King_Joe's Avatar
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    Re: SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial

    Great read, fantastic pics and amazing collection you've got.

    Sent from my Nexus 6P using Tapatalk
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  11. #10
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    Re: SLA017 (SBDX019) The 62MAS Re-Issue: A Pictorial

    Great review man!

    Sent from my SM-G950U using Tapatalk
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