Found an interesting grade 84 Elgin that I ended up purchasing. It’s engraved with a 17 jewels mark on the main bridge plate. Trouble is, I’ve never seen one like this and they are a 15 jewel watch. My conclusions so far as a new collector: 1. It’s a unscrupulous carving to try and get someone to buy the watch. 2. It’s been modified at some point to support 17 jewels, either at the factory or by a custom jeweler. Opinions ladies and gentlemen?