I know it has been asked a few times that is it possible to put the 21 mm wide steel bracelet of the 3777 (43 mm) on a 3717 (42 mm) but I haven't read anyone's experience after trying it...
If yes some close-up scans would be also nice to see...
I prefer the 3717 because of the better-for-me size and the more balanced dial while the micro-adjust double-pusher clasp makes the newer bracelet more desirable.
Thank you,
Robert