VTG 1970-80s Chinese Opera Masks Theatre Miniature Boxed Set Velvet Mounted 10

For your consideration is this set of ten miniature Chinese Opera Masks mounted to red velvet within and backed with the bottom of the box. Though unable to locate any images of the products in old advertisements, many mention "Chinese Opera Masks" for sale during the 1970s and 1980s. Seller believes the handicrafted set to have been produced in Taiwan, where most Chinese handicrafts were produced during that time. Each of the mounted masks measure 1.2 inches long x 1 inch wide x 0.5 inches high. There is some weight to them and seller speculates they are formed from some type of plaster and they all appear to be hand painted. The names of each of above each mask on little stickers adhered to the red velvet. The entire box measures 10.1 inches long x 2.1 inches long x 0.75 inches high. This is a nice little collectible as is, or used to decorate doll houses, or group on a plaque differently. Condition: Masks are in good overall condition with no issues observed. Box does have damage w