1909 Balboa, 1c dark green and black, center inverted, used, strong colors, centered to top as often, closed tear and faint toning at bottom, still fine appearing, one of only seven used examples reported, certainly among the most important stamps from Panama and one of the rarest inverted centers in the world, ex-Dr. Ernesto Arosemena, cat. $7500 (Cat No. 197a) (Image)

Cat. $7500, Est.$6,000

1911 unexploded "Valor B/-1.50" booklet with "60 Sellos Postales" panes of 6 (3x2) of 1/2c orange (3), 1c dark green & black (3), 2 1/2c red orange (2), 5c blue & orange and 10c violet & black, with advertising interleaves, printing on inside and outside covers, stapled at left, panes unused without gum as issued, incredibly rare booklet from Panama, listed but unpriced in Scott, ex Dr. Ernesto Arosemena (Cat No. 197b/200a) (Image)

Est.$5,000

1921 100th Anniversary, imperforate pairs, plate proofs on card in issued colors, also another set in green only, total of 24 pairs, v.f. (Cat No. 220-31P) (Image)

Est.$250