Shawnee pottery club heart diamond ceramic playing cards 3 coasters ashtrays

Three (3) ceramic combo ashtray / coaster dishes 5" X 4" X 1-7/8" three colors heart-pink, club-green, diamond-yellow card-playing theme. The heart, diamond and club are on bottom of coaster section and in-relief. Bottoms marked with embossed "Shawnee U.S.A. 411 Pat Pend". Assumed vintage mid-century. Very good condition - no chips, no cracks, no glaze crazing.