Lot Of 4x Vintage Japanese Chinese Beijing? Opera Theater Paper Mache Masks READ

I have not been able to find exact duplicates of these masks, but they look more like Chinese masks than Japanese, but I don't know for sure. The masks themselves are in overall good shape, with the exception of the green mask having some chipping happening in its right eye and the pink one having some scuffs and a slight stain under its chin. I have tried to take close ups on all of the imperfections, please let me know if there is a better picture you were looking for.

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