media.forum.iwc.com/media/ckeditor_images/624c6d777ede6f51c54f9e60553fce47.jpeg
media.forum.iwc.com/media/ckeditor_images/e4961c8b4dac82ce0ced9cf6058cb40b.jpeg
media.forum.iwc.com/media/ckeditor_images/1c23b83288629f9e5a5d4b86c116778d.jpeg
media.forum.iwc.com/media/ckeditor_images/b6b012be17692448c0bdb2eb4ae4e800.jpeg
I recently bought this at an antique fair, believing it to be a vintage Ingenieur. When I got home I did some research and opened the case to have a look at the Calibre. As you can see from the pictures it has a Calibre 8521, which my research suggested the watch dated to 1955. However yesterday a friend came over who knows a lot more about vintage watches than I do, and suggested that it may unfortunately be a Frankenstein. His reasoning was that there is no "Swiss" wording on the dial, no radium dots on the dial and that the design of the dial, does not match up to the old catalog images of Ingenieur with the Cal. 8521. I have spent quite some time today trying to see if I could find a similar model, but have come up with nothing. So I am now fearing that he might be right, and that this is a copy. So I am reaching out to all you vintage IWC collectors and enthusiasts, to pass judgement. Any help would be amazing. Thank you in advance 🙏