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

Cat. $1750, Est.$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.$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.$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.$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.$750