Set of 12 VTG Plus Mark Santa and Mrs. Claus Christmas Greeting Cards Unused

Vintage set of 12 Santa and Mrs. Claus Christmas greeting cards, marked "Plus". Cards are unused and in new condition as listed. Designs feature classic Santa and Mrs. Claus illustrations on each card. Included are 12 cards total with matching envelopes where applicable. Great addition for collectors or holiday stationery use. Please review photos for design details and condition confirmation.