Guessing age to be late 1800. Picture opening fits a standard 1 3/4" x almost 1 1/2" photo. There may be a few missing tiles, can't say for sure. PLEASE refer to all 12 close up pics to judge for yourself, great unaltered condition.
The item "Double Antique Victorian MICRO MOSAIC Italy Glass Tile Picture Frame" is in sale since Friday, September 27, 2019. This item is in the category "Antiques\Decorative Arts\Picture Frames". The seller is "oakhill-sales" and is located in Attleboro, Massachusetts. This item can be shipped to United States.