Trying to decipher the mark on a period silver plated art deco cocktail shaker. It looks like L& F separated by a chess piece(?) symbol. There is no country mark, just what's shown in photo 1. Photo 2 has the contrast tweaked in an attempt to sharpen the image. On a side note, are country of origin marks only on items intended for export? Does no country mark indicate U.S. origin? Any help appreciated!