Fascinating piece of space memorabilia. First day cover signed in advance by Armstrong so his wife could sell them to help support their family if he did not make it back. If you notice that the Apollo 11 moon scene looks nothing like what really occurred, as it was pre-printed. Superb cachet with mint blue ink signature. Cancelled Houston 7-20-69 at 3:17 pm, the exact time of the landing. Mint.