One could just collect the ref 3590.50 it came in so many variation.
Recently I made a spreadsheet based on following facts,
3590.50 had during its productions:
3 dials (c3, b4 and b4)
4 bezels (b2, b3, b4 and b5)
3 bracelets (1450/1479/1499)
4 case…
