Vintage Signed Challis & Roos SandStone Butterfly Coaster Set

Vintage Signed Challis & Roos SandStone Butterfly Coaster Set Vintage CoasterStone "Absorbent" Stone Coasters Butterfly 4Challis and Roos Butterfly Stone Coasters. Each coaster is 4" x 4" Very good pre owned condition NO CHIPS OR CRACKS. Comes from a smoke and pet free home. And always feel free to ask questions, thanks! Please look at all the pictures for they are part of my description.