Scott #1081 1958 Brussels Universal Exhibition First Day Cover FDC Unaddressed

This United States First Day Cover features the 3-cent Scott #1081 stamp issued in 1958 to commemorate the Brussels Universal and International Exhibition. The cover bears a block of four of the stamp, each depicting the United States Pavilion at the exhibition. The postmark is a clear "First Day of Issue" cancellation dated April 17, 1958, from Detroit, Michigan.