Vintage VOGUE Cover Coasters (with red felt backing)

These vintage coasters with 1917- 1927 VOGUE covers are a set of 6, in wonderful condition for the age (minimal scuffing). They are made of a very hard plastic/acrylic type material and have red felt backing attached (see second photo). They measure 3.75” (9.5cm) square. I have two of the exact same sets, can purchase separately or purchase twice for one large set of 12