Hi, I recently bought a mint condition gen crown (not sure about the model), about 4.7mm x 2mm. The current 3k 5711 I have has a crown size of 5.2mm x 2.3mm. Shall I switch the 3k crown with the gen one? Thanks for your advice. pictures below, 3k crown on the watch and the other is gen crown.
With your slightly smaller gen crown there might be a gap between the crown and the crown guard of the case. Anyway, it is your watch so you can do anything with it what you like.