1864 10c green, lightly canceled, margins clear all around, fine, with 1997 Philatelic Foundation Certificate, cat. $1750 (Cat No. 9) (Image)

Cat. $1750, Est.US$750

1891 1p, 5p and 20p Telegraph stamps used for postage, three different, each overprinted "Muestra" in red or black, last one without gum, others l.h., fine-v.f. (Cat No. 86-88S) (Image)

Est.US$250

1946 Roosevelt Memorial Issue, imperf. trial color proofs, three top sheet margin panes of 20 (60 stamps) in various colors (gray black, red brown and green), printed on yellow "Muestra" paper, few copies damaged, mostly fine-v.f. (Cat No. 551P) (Image)

Est.US$500

1930 20c-1.80p, green overprint, complete set, l.h., 90c toned, handstamp guarantees on reverse, fine-v.f., cat. $766 (Cat No. C25-29) (Image)

Cat. $766, Est.US$250

1930 Zeppelin Issue, overprinted in blue or green, 25 stamps, used on seven flown covers or cards to Germany, Czechoslovakia or Austria, each with "First Europe Pan-America Round Flight" cachet, one franked with the complete set, some creases, mostly fine-v.f. (Image)

Est.US$750

1930 Zeppelin First Flight blue overprints, complete set of five used on large flown, cacheted cover (21 May) to Friedrichshafen, v.f., with appropriate transit and arrival pmks, addressed to Dr. Hugo Eckener, signed by him at top of the cover, some toning, scarce (Cat No. C20-24) (Image)

Est.US$300

1860-78 Ceres, four imperforate, gutter, tete-beche sheets of 32, black on yellow and black on dark blue, mostly without gum, creases and some minor faults as always, interesting varieties (Cat No. 5,6) (Image)

Est.US$1,000