I've just received my Watchco Seamaster 300, and it arrived quickly by EMS (shipped on Wednesday, arrived on Saturday) without customs duties, and the watch head and bracelet were separately wrapped securely in bubble wrap, and placed in a box filled with packing peanuts and bubble wrap. The watch started up easily the moment I picked it up, and I proceeded to remove the bracelet from the sealed original Omega packaging, and attached it to the watch head. Under the loupe, the watch was in as new condition, with the exception of the plexiglass crystal which had a few small scratches under magnification, but nothing that a few days of careful wear wouldn't have imparted to the crystal.
In terms of the assembly, the bezel was properly aligned, and the Omega logo on the plexiglass was also properly aligned. The bezel is bidirectional, and it has a very precise feel, with very little play. The screwdown crown operated easily, and the movement appears to be in good, serviced condition as promised, indicated by the approximately -2/+2 spd deviation (depending on position), with a 300 degree (280 when crown right) amplitude, and 0.1 - 0.2 ms beat error on the Timegrapher when fully wound. The Omega 552 calibre beats at 19800 bph (5.5 bps) and has 24 jewels. It was not chronometer certified when it was sold by Omega.
Now for some impressions based on wearing the watch. The case profile is surprisingly compact, and it sits very close to my wrist, which is a pleasant change from most modern dive watches. The lume is exceptional, and is comparable or even better than on my Tudor Black Bay. The numerals on the bezel are lumed (but not the minute markers). The mesh bracelet is very comfortable and thankfully fits without the need for an extension (which is not included). The clasp takes a bit getting used to, especially when putting it on. The shine of the fine mesh bracelet makes it feel dressy to me, and I might put it on a NATO strap for regular wear instead. I will report back once I've had the chance to wear the watch for a bit.
Now for some photos of the watch:
Side by side with my vintage inspired watches, the Steinhart Ocean Vintage Military (copy of the Rolex Milsub 5517), Helson Skindiver (copy of the vintage Blancpain Fifty Fathoms), and my Tudor Black Bay.
The requisite wrist shot on my 6.75" wrist.
This is a photo of the lume.
Photos of the movement (supplied by Watchco)