Salt shaker or oil?

[thatsomg]

No idea what this is, found it in a safe. Thank You

[silverly]

Welcome to the forum. The trademark looks like it could be Durgin. Here's a link to Durgin trademarks on this site: http://www.925-1000.com/americansilver_D2.html

[AG2012]

Hi,
Confirming the maker.
It`s mustard pot open work with cobalt blue glass liner.
Regards