E13 15c Motorcycle block with scarce PLATE NUMBER BLOCK OF FOUR with plate block #16834 tied by Washington, DC. hand cancel, unaddressed. (Image)

Est. $150-200

E15EE, 803EE, 804EE 10c Motorcycle Electric Eye and 1/2 & 1c Prexi Electric Eye, Crosby thermographed cachet in green and brown on business size envelope with special delivery border. This cachet was made specifically for ALL three issues which all came out on the same day! An exceptionally scarce Crosby cover, unaddressed and very clean. Last sold in 2007 for $250 (plus 15%) in auction #233. (Image)

Est. $150-200

E15EE 10c Motorcycle Electric Eye Plate Block Crosby thermographed cachet in brown on # 10 size Special Delivery cover, scarce. (Image)

Est. $125-150