Vintage Egyptian Revival Cartouche Silver Clip 7510

Description

I cannot decide if this is a money clip or a large tie bar, but either way, it's a fantastic vintage piece.  It has several symbols or hieroglyphs including a lotus flower at the top, a pharoah, a scarab beetle reaching toward a sun or circle, and toward the bottom it looks like a bowl, cup, or basket with three vertical bars above it (no idea what that symbolizes).  It does test as silver but haven't been able to determine if it's sterling, continental, or what.  There are two extremely tiny marks on the back which look like more hieroglyphs, but I cannot make them out.
Measures 2 1/2" x 5/8".
Weight is 0.610 ounces or 17.3 grams.
Overall great condition; inside back of bar is darker or more tarnished.