August 14, 1844 - very early usage. This unique example of American Letter Mail Co. is a must-have for the most serious stamp collector. This cover features the 5L1 stamp with a bold red PAID cancel, a pen cancel, and is tied to the cover with a circular handstamp. This is the only known example tied to cover by the circular ALM-PHL-F10 handstamp - its historical significance and rarity make it a priceless investment piece. Presented in an award winning national stamp exhibit, don't miss out on the opportunity to own this exceedingly rare piece of American postal history.