St. Moritz plated bowl by Christofle

[JanGroen]

Good day
This is one of my latest finds and I would like to know more about the marks and age. It has the Christofle Scale mark, 12 and CHRISTOFLE marks on it. It also made a mark that resembles a bee with METAL BLANC next to it.
Am I correct if I think it is from St. MORITZ Hotel in Kulm?

Kind regards

Jannie

[Traintime]

Standard link to the Chritofle marks section: https://www.925-1000.com/a_christofle.html

So are we looking at a commercial wares date coding system of the early 20th century where 12 is 1912? Or is it another grams mark?