Lot 50230 – 1926 Triangular violet negative seal in top right

1926 Triangular violet negative seal in top right corner of envelope addressed to Col. Jacob, similar seal on reverse, very fine and scarce (Note: Colonel Jacob was assigned to Aden as an intelligence officer, but belonged to the Arab bureau in Cairo. Accounts state he was captured by tribesmen in 1919-1920 trying to reach Sanaa from Hodeidah. It was later revealed that he had an aborted attempt to strike an oil contract with the Imam.)