These are 3 of the named "Ivory Pyralin" celluloid material mirrors that were very popular from the 1900's -WW1.

 Pyralin was a trade name for a cream colored celluloid material produced by the Arlington Co. until 1917. 

The DuPont Co. bought it out in 1917.

All 3 mirrors are in fair condition. The mirror on one has some clouding.