I just picked up a 1960s Hamilton Masterpiece, manual wind with 22 jewel 770 movement. How long should it run when wound? It winds up pretty quickly (around 10 turns of the crown) so just curious.
Thanks for the info. Here's a picture of the watch. It's in pretty good shape considering its age.Yes - 45 hours is right bidfun-db Archive: Watch Movements: Hamilton 770
But that was for a new watch - you would expect somewhat less from an old watch unless properly serviced and with a new mainspring. In any event, its better to wind it every day for more consistent timekeeping. This thread covers a lot of the issues: https://www.watchuseek.com/f11/didnt-realise-you-had-wind-so-often-394687.html
Folks in here would like to see pictures of your watch.
Thats only a part of the truth, and since many old watches are worn out or poorly serviced,But that was for a new watch - you would expect somewhat less from an old watch unless properly serviced and with a new mainspring.
From what I understand, Masterpiece was a label Hamilton used on a variety of watches. The common thread with Masterpieces was they were made for the corporate market, so a high percentage are engraved as service awards, retirement gifts etc.Say, Hamilton experts - and sorry if the answer is obvious - I'm still learning about this brand - why is OP's watch not a Parker B? Is the Masterpiece a related model?