This is a very interesting art form.The picture itself measures 5 3/4" x 8" and is a finely detailed casting. We are pretty sure it is pewter. If not, it is a simular alloy. It is a one-sided casting with five brass bolts used to hold it into the nickle or silver plated brass frame. It depicts a scene with seven men and two flirting ladies in a cabin setting. Swiss Alps?