Need help to read these stamps

[heye255307]

Please correct if I'm wrong
My understanding of these stamp are

Square R - year of production 2014
Diamond - no idea what this mean
18SO - I assume it's the maker of this bag. But does the SO mean special order or just a coincident?

 

[newmommy_va]

This "SO" stamp has nothing to do with a special order.

fyi: Question on SO with Horseshoe stamp

Enjoy your bag!

Please correct if I'm wrong
My understanding of these stamp are

Square R - year of production 2014
Diamond - no idea what this mean
18SO - I assume it's the maker of this bag. But does the SO mean special order or just a coincident?

View attachment 2511878

 

[mistikat]

The stamps are atelier marks; they really have no specific meaning.