Antique Edwardian 1900s Colored Photo Pendant Depicting Two Women

This is a beautiful unique colored photograph of two women set in a ship wheel like setting. Based on the ladies' clothing and hair, I believe the pendant is from the 1900s. The back is stamped "SD," and there is white tarnish along the edges. There are also areas where the gold has worn away, and spotting on the back. The photo itself looks to be celluloid or at least some sort of plastic. Every part of the photo is colored, including the women's gold necklaces. Light scratches are present on the photo, as well. Overall, the piece is still in very great shape for its age. Approximate Dimensions: 1.25in long 1in diameter