Curious about an unusual Gruen Pan American Sub Seconds
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Thread: Curious about an unusual Gruen Pan American Sub Seconds

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  1. #1
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    Curious about an unusual Gruen Pan American Sub Seconds

    Picked this one up recently and really love how it looks but wondered if anyone could tell me a bit more about it. I believe this is a Pan American but have never seen this dial and hands combo and the steppes cases like this. I haven't opened it yet so no word on movement.
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  2. #2
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    Re: Curious about an unusual Gruen Pan American Sub Seconds

    Hello!

    That is a nice looking automatic. Likely a bumper auto too with the sub-seconds dial. I'd guess a late edition of the cal 460 or 462. Both are in-house to Gruen in the late 1940s.

    That said, it isn't a Pan American. 1st - the dial is lacking a 24-hour chapter which would have been inside of the main hour chapter ring. 2nd - There are no known Pan Am models with a autowind movement. All the known variations on the round Pan Am used the manually wound cal 420ss and with a few models in Swiss-made cases the subseconds 420.

    So, nice watch, and a nice Gruen. More pictures would be appreciated, i.e., case back, movement, etc...

    Cheers!
    Last edited by JackW; June 23rd, 2017 at 09:50. Reason: correction
    badbackdan, busmatt, mkws and 2 others like this.
    All that I know is based on the hard work and writing of others. I can only aspire to augment this body of knowledge. If I am wrong it is because of my own failings. To quote Newton, "If I have seen farther it is by standing on the shoulders of giants."

  3. #3
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    Re: Curious about an unusual Gruen Pan American Sub Seconds

    Quote Originally Posted by JackW View Post
    All the known variations on the Pan Am used the manually wound cal 420ss and with a few models in Swiss-made cases the subseconds 420.
    Ya know, that isn't quite right... I always forget about the later line of Pan Am watches that came in a square case. These were based on the tonneau-shaped caliber 425ss; still a manually wound movement.
    All that I know is based on the hard work and writing of others. I can only aspire to augment this body of knowledge. If I am wrong it is because of my own failings. To quote Newton, "If I have seen farther it is by standing on the shoulders of giants."

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