Specialized U.S. Collections, Air Post, Foreign Stamps & Covers continued...

**United States Postage Due Issues (Proofs and Trial Color Proofs) continued...**
Lot	Sym.	Lot Description
5237	P	10c Dark Brown, 1879 Postage Due, Plate Proof on India (J5P3). Bottom left imprint and plate no. 331 block of 18, pencil and red and blue crayon proofing dates of September 15th and 16th, 1879, Extremely Fine, choice exhibition piece (Image) Search for comparables at SiegelAuctions.com	884.00 SOLD for $1,400.00 Will close during Public Auction
5238	TC	30c 1879 Postage Due, Large Die Trial Color Proof (J6TC1). Three different colors, die sunk on cards, 58 x 64mm to 63 x 70mm, Very Fine-Extremely Fine (Image) Search for comparables at SiegelAuctions.com	1,500.00 SOLD for $325.00 Will close during Public Auction
5239	TC	50c 1879 Postage Due, Large Die Trial Color Proof (J7TC1). Four different colors, die sunk on cards, one 60 x 68mm, others 66 x 76mm, Very Fine-Extremely Fine (Image) Search for comparables at SiegelAuctions.com	2,000.00 SOLD for $425.00 Will close during Public Auction
5240	P	1c-50c 1879 Postage Due, Large Die Proofs (J1P1-J7P1). Die sunk on cards, 72 x 79mm to 77 x 89mm, 1c-5c values the smaller ones as typically seen, these four also have die numbers, wonderfully fresh, Extremely Fine, pristine set (Image) Search for comparables at SiegelAuctions.com	1,750.00 SOLD for $700.00 Will close during Public Auction
5241	P	1c-50c Brown, 1879 Postage Due, Hybrid Large Die Proofs (J1P1-J7P1 var.). On full size 137 x 215mm die sunk cards with gold gilt edging, at one time part of a presentation book, Very Fine and choice, scarce set, Scott Retail as normal large die proofs (Image) Search for comparables at SiegelAuctions.com	1,750.00 SOLD for $375.00 Will close during Public Auction
5242	P	1c-50c 1879 and 1891 Postage Due, Small Die Proofs (J1P2-J7P2, J22P2-J28P2). Complete sets on full page from a Roosevelt book, Very Fine-Extremely Fine, seldom seen today and one of only 85 prepared (Image) Search for comparables at SiegelAuctions.com	1,575.00 SOLD for $1,100.00 Will close during Public Auction
5243	P	1c-50c 1879 Postage Due, Small Die Proofs on Wove (J1P2-J7P2). On small gray cards from a Roosevelt album, 2c minor margin soiling, otherwise Very Fine-Extremely Fine, only 85 sets believed to have been issued (Image) Search for comparables at SiegelAuctions.com	700.00 SOLD for $200.00 Will close during Public Auction
5244	P	1c-50c 1879 Postage Due, Small Die Proofs on Wove (J1P2-J7P2). On small gray cards from a Roosevelt album, Very Fine-Extremely Fine, only 85 sets believed to have been issued (Image) Search for comparables at SiegelAuctions.com	700.00 SOLD for $200.00 Will close during Public Auction
5245	P	1c-50c Brown, 1879 Postage Due, Hybrid Composite "H" Proof (J1P3-J7P3 var.). The seven values on India paper cut close and pressed on die sunk 78 x 91mm card, Very Fine, this is the so-called "H" proof because of the manner in which the proofs are arranged on the card and the proofs used to make this presentation item are the only ones available that are brown (like the four lower values) as opposed to the dark brown India plate proofs of the 10c-50c from full sheets, with 1968 Essay-Proof Journal article by Warren R. Bower (Image) Search for comparables at SiegelAuctions.com	E. 750-1,000 SOLD for $500.00 Will close during Public Auction
5246	P	1c-50c Brown, 1879 Postage Due, Hybrid Composite "H" Proof (J1P3-J7P3 var.). The seven values on India paper cut close and pressed on full size die sunk 146 x 200mm card, Very Fine and rare, this is the so-called "H" proof because of the manner in which the proofs are arranged on the card and the proofs used to make this presentation item are the only ones available that are brown (like the four lower values) as opposed to the dark brown India plate proofs of the 10c-50c from full sheets (Image) Search for comparables at SiegelAuctions.com	E. 1,000-1,500 SOLD for $550.00 Will close during Public Auction
5247	P	1c-50c 1891-93 Postage Due, Plate Proofs on Card and India (J22P3-J28P3, J22P4-J28P4). Former horizontal blocks of eight, each with side sheet margin, latter blocks of four on original card backing and huge card margins at bottom, fabulous margins and wonderfully fresh, Extremely Fine and pristine sets (Image) Search for comparables at SiegelAuctions.com	1,675.00 SOLD for $700.00 Will close during Public Auction