Framed First Day Stamped Envelope with Albert Einstein Signature
Envelope: 4 x 7 in. (10.2 x 17.8 cm)
Other (Signature Opening): 1.5 x 3 cm (9/16 x 1 3/16 in.)
Albert Einstein (1879-1955) was a German physicist who is widely regarded as one of the most influential scientists of all time. His theory of relativity helped unify the concepts of space and time, and led to new discoveries in the astronomy world. He received the Nobel Prize in Physics in 1921 for his contributions to theoretical physics and the discovery of the photoelectric effect.