Pair of c. 1920s Celluloid Balancing Rattle Birds!

I actually found these two inside an old handmade cigar box circus car, then looked them up and found they fairly collectible. They are made of celluloid, and are little rattles, and balance when perched on something, as I have them photographed them here. c. 1920s and just fun little things, sold as a pair because surely they are love birds after all this time together!

These show their age but are in great structural condition. About 3 7/8" long. Sold as a pair.