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I think you can still get an IWC Spitfire in LNIB condition within the OP's price range. Mouse_at_Large pictured one version above, but I think they were 39mm. Not in-house, but certainly some interesting mods done by IWC to an ETA ebauche.
Judging by the size of the numerals, there must be a lot of old folks in Reyjavik.
Now those are some BIG numbers!
Because it's a BIG watch (45mm) - bigger than the 40 - 42mm stated range the OP is looking for.