1863, 2¢ black, Trials and Expertimentals. 13 items; including 5 trial color plate proofs with geometric trial cancels, with two vertical pairs in light blue and gray with only top stamps experimentally canceled, experimental papers including 2 greenish Francis patent paper singles, Lowenburg Decalcomania essays including two singles and strip of 3 and perfed single and block of four of the Francis alkaline reactive experimental papers, also a #73-E4c strip of 3 essay, F.-V.F. overall. Scott No. 73E  Estimate $750 - 1,000. $0 (Image)