Dan S
·The pictures are poor but the text under the logo does look at bit cramped so it could indeed be a redial but I would want to see more before declaring that as definitive personally. Here is my no date version, a 2846 from 1957. I think your price expectation is way over the top. An all original solid 18K SM might make maybe £1k-1500 depending on condition, any more and you are into gold Connie territory. Chronometer rated models make more but ours are not. And I am maybe being optimistic as an existing owner!
Even with the terrible photo, I'm at 99% on the redial based on the text position and the wonky "S". Add the overpolished case, and we're pretty close to melt. Yours is in a different category.

