Currently, the number of solo uses of the 18¢ sheet stamp paying six times the 3¢ first-class surface letter rate on a piece of mail sent prior to August 1, 1958 is: 1. 

​

Description:  Legal-sized first-class letter mailed to Trenton, New Jersey on October 17, 1940, with the 18¢ Prexie paying for a 6 x weight letter.

Owner/Source: Richard Pederson

Image(s):