Occasionally you will find older photo frames made of sterling silver. It is possible this frame is silver. The R could be a manufacturer's mark. I would bring it to a jeweler to see if it is silver. 925 usually means sterling, 92.5% pure.
Matt Hall
"IS" stamped on the back of silver items can represent the manufacturer's initials, the artist's signature, or a silver content mark. It is important to verify the origin and quality of the silver piece by consulting a professional before making assumptions.
The 925 is indicative of 92.5% sterling silver.
International Silver
The marking "925" on the back of a bracelet indicates that the piece is made of sterling silver, which is an alloy containing 92.5% pure silver. This marking is a standard way to denote the silver purity content in jewelry.
wallace is a boy that is mean and has a bad reputation
Electro plated in Korea.
A stranger
Epsl in the back of silverware mean the name of the company that made it. Epsl stands for international silver.
each piece of Wallace baroque silver plate holloware is stamped with an identifying number, as several pieces can be confused - i.e. trays. replacements.com has the most complete inventory with matching stamped numbers.
331 mean on silver