Any ideas please

My guess work looking for a professional opinion, marks for Rebecca Eames and Edward Barnard, date letter is lower “a”.
17cm tall with gilt inside.
Engraved on each goblet is a man holding a club in one hand and a snake coiled around his other arm, any ideas?
First time on here so hope I’ve

First time on this site so hope I’ve done it correctly.

The engraving is a family armorial. If you want to know which family owned it you could try looking through “Fairbairn’s Crests”, several editions of which are available online.

Many thanks, I found several family names associated with the armorial so more research.
And I thought silver marks were a challenge.