Lot
691 
Leavitt Machine, "Philadelphia Pa. Dec 3 '81", type X1A, bold strike ties 1¢ gray blue (206), couple trivial toned perfs, on unsealed legal-size all-over printed advertising cover addressed to Grand Ledge, Michigan, advertisement for the Farm Journal, Very Fine and scarce use on last day (Rarity K). Estimate $500 - 750.
This experimental machine was used only on December 2-3, 1881.
Realized: $325