Think like a geek. The Theory Wall Frame is a great addition to any office, dorm room or den wall. The Theory of Relativity features two US mint postage stamps of Albert Einstein. The mint stamps were issued in 1979 and 1966. The 15 cent stamp marks the 100 year anniversary of Einstein's birth. The 8 cent stamp was part of a series of prominent Americans.Details:14" x 16" black frame2 U.S. mint postage stamps of Albert EinsteinComes with a Certificate of Authenticity