I have a French silver beaker stamped near the rim with a Minerva in a cartouche (8-sided) thus .925 silver. On the bottom is a maker's mark. It is a horizontal diamond shaped cartouche (4-sides) with L and G at either side of what looks like a deer head on rightside, bottom on left side with line underneath and possibly a star above it. It looks most like the mark for Lapparra and Gabriel except it has a deer instead of the rat. ANY HELP WOULD BE GRATEFULLY RECEIVED. THANK YOU!