Help with hallmarks

[SaraL]

I wonder if anyone could help me identify hallmarks in my ring. It's a diamond, platinum ring.
The ring is marked PLAT HP and 776

 

[monarch64]

You might try moving this to Rocky Talky to get more views/responses.

HP is probably the jeweler who made the ring. The inside of mine has initials (different letters) signifying the name of the jeweler who made mine. The 776 could be the number of the design? Not sure on that.

 

[SaraL]

Thank you!