Trodat 2-Color Self-inking Stock Stamp - PAST DUE - Red/Blue Ink New Trodat 4912 Self Inking Rubber Stamp w. Past Due & Pic Max. Text Plate Size: 3/4" x 1-7/8" (19 mm x 47 mm) Red & Blue Ink Color Easy, Fast, Unlimited Refill, More Than 10,000 Times Used Guaranteed.