The listing, Used U.S. Stamp #1131 4¢ St. Lawrence Seaway-Possible Free Shipping has ended.
The 4-cent St. Lawrence Seaway Opening commemorative stamp was issued through the Massena, New York, post office on June 26, 1959. A stamp identical in design except for differences in the caption and denomination was released simultaneously, in Ottawa, Canada. The Canadian stamp was in the 5-cent value. Reproduced on the stamp are the emblems of both nations — the maple leaf for Canada and the eagle for the United States — enclosed in interlocking links and superimposed over a backdrop of the Great Lakes.