Vintage Decoupage Cloisonné Inspired Ostrich Egg shop Artist Signed

Vintage Decoupage Cloisonne inspired ostrich egg
at first I thought this was a hand painted egg, but I realized it is "paper"
the egg is real and measures 6 inches by 4-1/2"
The colors are somewhat muted and not as bright as one would expect.
However, the piece has some age although not dated.
weight is 9.4 ounces shop