14K yellow gold articulate Cuckoo clock charm pendant 20.4 x 12.7mm 4.5gm

This is a very cool adorable 14K yellow gold charm, the charm is an unusual Cuckoo clock. The pendulum able to swing two sides. The birdhouse door can push close, the cuckoo bird always pop out. On both sides of the clock, there is an opening for the young birds to enter, below has perch for them to stand. Roof with tile texture, the clock has wood grain etching. The charm is 20.4 x 12.7 x 9.8mm, weight 4.5gm, hallmark 14K, circa 1970-1980.