GJ.69a, 1c on 15c., vermilion ovpt., variety: No line below "1884" (Image)

GJ.74a, with variety: No line below "1884" (Image)

GJ.75, 1c on 15c., vermilion ovpt. (Image)

GJ.79, franking a cover sent from Buenos Aires to Cádiz (Spain) on 22/FE/1889, with arrival backstamp of 19/MAR/1889, VF quality (Image)

GJ.93, with VARIETY: unprinted spot above the "S" of CENTAVOS, VF (Image)

GJ.103, PROOF on wove paper, in red (1958 Kneitschel, volume II, page 692), VF (Image)

GJ.103, 13 PROOFS on card, in different colors and shades (1958 Kneitschel, volume II, page 691), VF (Image)

GJ.106, marginal block of 4, PROOF on card, in rose (1958 Kneitschel, volume II, page 691), VF (Image)

GJ.108, very fresh gum (Image)

GJ.110, VF quality (Image)

$2 UNISSUED ESSAY printed on card, in light blue (1958 Kneitschel, volume II, page 691) (Image)

GJ.119, PROOF printed on card, in light blue color (1958 Kneitschel, volume II, page 691) (Image)

GJ.123, perf 11½ x 12, with VARIETY: printed on oily paper, interesting (Image)

GJ.133, block of 6 with FORGED double ovpt. (Image)

GJ.134, block of 4 with FORGED double ovpt. (Image)

GJ.134, pair with FORGED double ovpt. (Image)

GJ.138P, small sun wmk, imperforate pair of excellent quality, very lightly hinged, it appears to be MNH (Image)

GJ.139, PROOFS printed on thin unwatermarked paper, perf 11½, in the 4 known colors (1958 Kneitschel, volume II, page 695), VF quality! (Image)

GJ.140, 6 blocks of 4, PROOFS on card, in different colors, VF (Image)

GJ.141, marginal pair with printer imprint, variety: Shifted perforation (Image)

GJ.142, 4 blocks of 4, PROOFS on card, in different colors, VF (Image)

GJ.152/61, small sun wmk, perf 12¼, set without the high value (Image)

GJ.160, small sun wmk, perf 12¼ (Image)

GJ.172, small sun wmk, perf 11½ x 12¼, very scarce! (Image)

GJ.217/35 + 237/8, Seated Liberty, set without the $5 (21 values), ALL with punch cancel, very scarce, the low values are rare! (Image)