Original von jholbrook
Greetings R-L-X!

Does anyone know what year Rolex began using 904L grade stainless steel in their watches, and what grade was used previous to 904L?
John.

I will say in 1988 thay start with the SS 904L at the last Ref 168000 Sub
with date. Beofre that they use SS 1916.

Jocke