Trodat Ideal 80 4912 Value Stamp 18. This Personalized Trodat Ideal 80 4912 Self Inking Stamp displayed here has a 3/4 x 1-7/8 inch imprint area. Style 18 features an Arial Helvetica style font in all capital letters. It has it's own internal Ink Stamp Pad. The Ideal 80 Self Inking Rubber Stamp was invented in 1979 perfected by M&R Marking of New Jersey. Re-engineered several times over the years this Stamper keeps getting better and better. The latest improvement to this Stamper comes from Trodat USA after the acquisition of M&R Marking. This Ink Stamp still has much of the original design features. The stamp is easily re-inkable or you can replace the tiny Ink Pad inside. Trodat Ideal 80 4912 Self Inking Stamp is the best stamper on the market.