Prior to November 1, 1953 the UPU rate for surface mail weighing up to 1 ounce was 5¢ and the rate for each additional ounce was 3¢. Currently, the number of solo uses of the 11¢ sheet stamp paying 5¢ for the first ounce and 6¢ for 2 additional ounces is: 1.

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Description: Letter sent from Kansas City, Missouri to Colchester, Essex, England requiring 11 cents postage to pay the UPU surface rate for an item weighing up to 3 ounces.

Owner/Source: Lot number 1392 in Schuyler Rumsey Philatelic Auctions Catalog for Sale No. 92 with items from Robert Schlesinger's Prexie Postal History Exhibit. The lot realized $525.

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