Question on 1952 Rolex Manual Wind (6044/6144) - Slipping vs. Hard Stop?

Hello all,

I'm hoping to get some input from the vintage movement experts here on a 1940s/1950s Rolex Oyster Royal (Ref. 6044 or 6144, manual wind Caliber 700/710).

I recently purchased the watch, and it was serviced 3 months ago. The timekeeping is excellent, and the power reserve is running 24-30+ hours, but I have a question about the winding feel.

Expected behavior (for a manual wind): The winding should get progressively tighter and then hit a hard, solid stop when fully wound.

Actual behavior of this watch: I wind it each morning and there is pressure and when fully wound (after about 15-20 turns), I then feel a distinct clicking/slipping sensation and the pressure drops and the crown continues turning with no pressure (like an automatic movement).

My question is two-fold:

1. Is this "slipping" action considered normal/acceptable for this particular vintage caliber, perhaps as a modification by a past watchmaker (e.g., installing an automatic mainspring with a slipping bridle for safety)?

2. If it should be a hard stop, does this slipping behavior definitively indicate a defect (such as a worn mainspring hook/barrel notch) that the dealer should correct under warranty?

Any technical insights would be greatly appreciated!

Thanks in advance folks!
Sam

Thanks so much Dan, I was thinking the same thing! Cheers man.

Thank you!

Just a question as I learn here - my understanding is that if there was a broken mainspring that I wouldn't be able to be winding the watch at all each morning and that it would just free spin and I would be able to wind it up. Is this not correct?

I am able to wind it with proper pressure daily it just seems to slip once it's full instead of getting tight like all my other manual watches.

Yeah, that's kind of what I'm thinking. Thank you so much for taking the time. Really appreciate you