I thought I saw one like yours on the Bay not too long ago. Absolutely beautiful watch. Currently there is one almost identical to yours (JLC) but the crown is not recessed. It is very attractive with a NOS dial replacement. Very tempted but not sure if r...
I am no expert but these dials usually were two-tone with the date ring being a different colour or shade. The crown isn't recessed because it's a jumbo model - 36mm. The case is also slightly different. Mine is 33mm.