Two diamond an Eagle and an LB

by Susan
(Michigan)

Hello,
I have this old gold/ gold filled band ring with hallmarks I cannot identify. As seen in the picture it appears to be an eagle or falcon head facing left in a square with a diamond on either side of the square. Inside each diamond appears to be a single arrow.

The left diamond contains an arrow facing right and the right diamond contains an arrow facing left. To the right of the whole mark are the letters LB. Any ideas? Thanks