Great Grandma's Wedding Band | Id. 132

My mother asked if I could find someway to find out who and when Great Grandma's wedding band was made. The mark is a stamp on the inside of the ring with a "W" on top of what I thought was at first three "X" on top of each other. But closer examination was the X's two interweaving lines. I drew a picture of what it looks like since my camera cannot zoom in with great detail.

Any info would be great thanks
Patrick