Desirable block of four five-cent US postage stamps honoring Ed White’s Gemini 4 spacewalk, 4 x 2.25, signed in the blank right panel in blue ballpoint, “Neil Armstrong. “Apollo 11” has been added to the right in another hand. Encapsulated in a plastic PSA/DNA authentication holder. In fine condition. Pre-certified Zarelli Space Authentication.
Terms and abbreviations used in our descriptions.