Miniature Sterling Souvenir Knife Pin Bride's Pattern

Small sterling silver knife pin with Washington, DC and 1949 hand engraved on front. Marked Sterling and SB on the back. Silver pins like this were often given to young ladies in the 1940s when they selected their sterling silver flatware pattern. We don't know why it is engraved unless some were used as souvenir pieces. An interesting and pretty conversation piece, it measures 2.5" long.