Hello everyone, My brother-in-law is interested in a vintage IWC watch but as he doesn't know much about vintage watches and as I'm not very knowledgeable about IWC watches myself, I'm posting some pictures here and calling for your help in identifying any red flags with this watch. To me, this is not a perfect example in any way. The case seems OK, hands are correct to me and the dial seems original (but I can't be sure about that, I'd be way more confident with an Omega). Can you spot any red flags/tell me if this watch seems authentic? Thanks to anyone who can help! Here are some pictures: Again, thanks to anyone who can help me with this one.