Restoration Help!!

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Hey guys I’ve stumbled upon this vintage oyster perpetual and would appreciate some help identifying some characteristics of the watch. Id like to know if anyone knows the age of this watch, what original crown would sit on this watch and lastly what movement it has. If anyone can help me identify these details thank you so much.


It’s an oyster perpetual Ref. 6334 and it says brevet next to it, its serial number is 88192. There’s a number on the movement 28671 idk if that’ll help but if these details help. I appreciate your help in the meantime.

Just realised after writing this message i cant post links, so if anyone could help please let me know and ill send you the imgur. Thank you