Can you clarify how does your gas escape valve work, since I can see from here its very original? Good fit otherwise we would not have been able to see your valve.

IWC Mark. First had the 18, later bought the 15. Not really the same, but close :)

Super hard to tell based on one very sloppy pic, but combination of FB marketplace + low price + very questionable proportions of the dial + bad bracelet endlinks fit and overall feel of this item being of a low quality, tell me its 99% fake.