Set of 6 Vintage Avon Strawberry Napkin Rings

Set of 6 ceramic napkin rings with strawberry design. Stamped on bottom Produced in Brazil For Avon. I have read online that the date of production is 1978 and that the gold edging is 22K (I cannot confirm this because I don't have the original box) Rings measure 1.75" in diameter by 1.25" wide.