5513 OEM: crystal and bracelet

[Bob_Sacamano]

Hi,
I’d like to know if the OEM T19 crystal of an old 5513 is a simple dome (with distortion) or a double dome (no distortion). I think it’s a simple dome.

Same question for the bracelet, rivet or folded ? I understand that both bracelets were sold at the end of the 60’s. The customer could choose then?

Many thanks for your help