cal.354 or cal.352rg or cal.?
Thank you.

 

Or a modification
Because the pump 354 pictures are not clear.
Thank you.

 

What's not clear?

 

Looks identical to my 352.

 

352 or 354 are packaged in constellation 18k.

 

Can't be a 354 with a fine Rg, though it could be a marriage.

 

The movement has an RG regulator, it is stamped 352 on the barrel bridge, and it has the "luxury finish" ratchet wheel. The S/N beginning 1,26x,xxx is also in the correct range for a 352 and not for a 354. All of that would seem fairly conclusive, and I see no reason to be suspicious . . .