50c Light Violet (477).
Selvage at bottom, barely hinged, fresh and bright color, wide margins,
Extremely Fine, with 1992 P.F. certificate
(Image) 
2c Carmine, Ty. II, Coil
(491). Pair, radiant color, perfectly centered with well-proportioned
margins all aroundEXTREMELY FINE GEM. A BEAUTIFUL PAIR OF THE UNWATERMARKED 2-CENT ROTARY TYPE II PERF 10 COIL.
Unlike most other issues, the horizontal coil is actually scarcer than the vertical coil. It was in production for only a short period of time before being replaced by the Type III, Scott 492.
With 2000 P.F. certificate. (Image)
2c Carmine, Ty. II, Coil
(491). Lightly hinged, rich color and detailed
impressionEXTREMELY FINE EXAMPLE OF THE RARE 2-CENT TYPE II PERF 10 HORIZONTAL COIL ON UNWATERMARKED PAPER.
With 2004 P.F. certificate (Image)
1c Green, Horizontal Pair,
Imperforate Between (498b). Two center pairs in Mint N.H. bottom plate
no. block of twelve, dark color, also incl. the adjoining bottom left
corner block of eight that has been detached, weak perfs to left of errors,
the bottom error is well-centered with huge margins at top and bottom,
Fine-Very Fine and impressive multiple
(Image)
1c Green, Perf 10 at Bottom
(498g). Top plate no. block of six, bottom stamps show transitional
perforations with right stamp Perf 11, center stamp combination Perf 10 and
11, left stamp Perf 10, bottom left stamp and two stamps at top lightly
hinged, others Mint N.H., deep rich colorVERY FINE. THE UNIQUE MULTIPLE OF THE ONE-CENT GREEN 1917 ISSUE PERFORATED 10 AT BOTTOM, SHOWING TRANSITIONAL PERFORATIONS AND WITH PLATE NUMBER AT TOP. ONE OF THE MAJOR 20TH CENTURY PERFORATION RARITIES.
Our records of Scott 498g contain seven unused and four used examples of this rarity. The unused examples are as follows: 1) choice centering, original gum, Perf 10 at top, 2) centered slightly to top, original gum, Perf 10 at top, 3) original gum, centered to bottom left, Perf 10 at top, 4) Mint N.H., centered to bottom left, offered in our 2001 Rarities sale (where it realized $6,250 hammer), 4) and 5) block of four, original gum, Perf 10 at top, choice centering, 6) and 7) the block offered here.
With 2003 P.F. certificate. Scott Retail as one hinged and one Mint N.H. example of the variety is $12,500.00 (Image)
2c Deep Rose, Ty. Ia
(500). Mint N.H. top plate no. F10208 block of six, incredibly intense
Deep Rose color on fresh paper, remarkably well-centeredEXTREMELY FINE PLATE BLOCK OF THE SCARCE 2-CENT TYPE IA WITH FULL TOP SELVAGE.
Full top plate blocks of Scott 500 from the experimental Type Ia plate are rare and almost invariably off center. This is one of the finest we have ever encountered.
With 1999 P.F. certificate (Image)
5c Rose, Error (505).
Double error in block of six, tied by "Philadelphia Pa. Reg." oval
handstamps on registered cover to Cambridge Mass., purple "Philadelphia
(Sta. 19) Aug. 14, 1917" and receiving backstampsVERY FINE. A RARE MULTIPLE ON COVER OF THE PERF 11 5-CENT ERROR. PROBABLY FEWER THAN FIVE PAIRS OF THIS 5-CENT ERROR EXIST ON COVER.
The 1984 census by Larry Weiss of Scott 467 and 505 on cover records only three covers bearing pairs of the 5c error, Scott 505. The cover offered here is not listed in his census. (Image)
8c Olive Bister, Perf 10 at
Top (508c). Brilliant color, "Dayton Ohio" precancel, faint corner
crease at bottom rightVERY FINE APPEARANCE. AN ATTRACTIVE EXAMPLE OF THIS VERY RARE PERFORATION VARIETY. OUR RECORDS CONTAIN ONLY THIRTEEN EXAMPLES.
Only two other examples in our records have a Dayton precancel. (Image)
8c Olive Bister, Perf 10 at
Bottom (508c). Brilliant color, "Dayton Ohio" precancel, faint internal
creaseFINE APPEARANCE. AN ATTRACTIVE EXAMPLE OF THE THIS VERY RARE PERFORATION VARIETY. OUR RECORDS CONTAIN ONLY THIRTEEN EXAMPLES OF THIS PERFORATION VARIETY.
Only two other examples in our records have a Dayton precancel. (Image)