Is this Harvey Era? ANyone recognize the Hallmark?

Identifying & Discovering
1

New arrival this week. Unfamiliar with the hallmark. Inverted J, J, and B. Any thoughts?

IMG_6942[1].JPG4032×3024 2.55 MB

IMG_6943[1].JPG4032×3024 1.22 MB

2

My guess is that is a new ring. Couldn’t find anything on the hallmark. Not a Harvey era piece.