Lot
755 
Mexico, 1885, Hidalgo Medallion, 5c ultramarine, on form 2776 to pay the 5c AR rate for a letter from Mazatlan to Hamburg, Germany, multiple transit markings, this was the official form to send AR mail and just a handful have survived, often the 5c fee was included in the postage on the cover, but in rare instances of early mail the fee was attached to the form, Very Fine, a very scarce piece of postal history. Scott Nos. 169 Estimate $400 - 600.