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You searched for Creator ArtCraft Remove constraint Creator: ArtCraft Subject Einstein, Albert, 1879-1955 Remove constraint Subject: Einstein, Albert, 1879-1955 Subject First day covers (Philately) Remove constraint Subject: First day covers (Philately)
Cachet and stamp depict Albert Einstein. Cachet also depicts Einstein's formula for mass-energy equivalence and is from the Prominent Americans Series. The postmark is from Princeton, New Jersey.