Recently purchased a vintage Omega 2181 Jumbo with a 265 movement in 14K gold. I bought the watch through a private seller based out of NYC, with, frankly, limited information. I was told he recently had it serviced through his jewelry in NYC. Pictures below. Questions 1. Any major red flags or indication it could be a fake? 2. Do you think the dial is original? There's a noticeable mark near the 4. 3. Do you think the movement is original? 4. Is the case most likely solid gold or gold plated? It looks solid Any other information would be greatly appreciated!