1917 1c green, used, perfectly centered with jumbo margins, a beautiful stamp, with 2008 PSE certificate graded "Superb 98J" (SMQ $250) (Cat No. 498) (Image)

Est.$150

1917 1c green, horizontal pair imperf. between, n.h., v.f., with photocopy of a 2019 PSE certificate for a block of 18 from which this came, cat. $1350 (Cat No. 498b) (Image)

Cat. $1350, Est.$500

1917 AEF 1c green, booklet pane of 30, n.h., well centered, fine-v.f., cat. $1700 (Cat No. 498f) (Image)

Cat. $1700, Est.$500

1917 2c deep rose, n.h., well centered, v.f., with a photocopy of 2018 PFC for a block of six from which this came, cat. $550 (Cat No. 500) (Image)

Cat. $550, Est.$250

1917 2c deep rose, type Ia, n.h., fresh color, fine, with 2005 APS certificate, cat. $550 (Cat No. 500) (Image)

Cat. $550, Est.$150

1917 2c deep rose, type Ia, n.h., fresh and fine, with 2019 William T. Crowe certificate, cat. $550 (Cat No. 500) (Image)

Cat. $550, Est.$150

1917 5c error, n.h., two blocks with 2c (hinged), fine, cat. $1250 (Cat No. 505) (Image)

Cat. $1250, Est.$300

1917 5c rose, double error in 2c pane of twelve, n.h., nice color, one of the 2c with some natural gum loss, fine-v.f. and fresh block, cat. $1850 (Cat No. 505) (Image)

Cat. $1850, Est.$650

1917 5c rose, two singles in 2c error block of twelve, n.h., well centered, with 2018 PFC graded "VF 80" (Unpriced in SMQ) cat. $1850 (Cat No. 505) (Image)

Cat. $1850, Est.$1,000

1917 5c error in block of 12, unused without gum, nice color, fine-v.f. (Cat No. 505) (Image)

Est.$250

1917 11c light green, perf. 10 at top, double oval cancel, well centered, thin at top and right, otherwise v.f. example of this rare stamp, seldom seen used without a precancel, with 2019 PFC, cat. $3750 (Cat No. 511a) (Image)

Cat. $3750, Est.$900

1917 30c orange red, n.h., near perfect centering and beautiful color, with 2005 PFC and 2008 PSE certificate, the latter graded "XF-Sup 95" (SMQ $475) (Cat No. 516) (Image)

Est.$350

1917 2c carmine, n.h., rich color, fresh and fine, with 1992 and 2018 PFCs, cat. $900 (Cat No. 519) (Image)

Cat. $900, Est.$500

1918 $5 deep green and black, block of four, horizontal guide line, well centered, with 2019 PSE certificate graded "XF 90" (SMQ $300 as singles) (Cat No. 524) (Image)

Est.$250

1920 2c carmine rose, type IV, with parts of adjoining stamps on all sides, n.h., a true gem, with 2017 PSE certificate graded "Gem 100J" (SMQ $400 for "100") (Cat No. 532) (Image)

Est.$300

1920 2c carmine, type V, horizontal pair, n.h., large margins all around, v.f., with 2007 PFC, cat. $400 (Cat No. 533) (Image)

Cat. $400, Est.$350

1920 2c carmine, n.h., large margins all around, bright color, with 2019 PSE certificate graded "XF 90" (SMQ $3,750) (Cat No. 534B) (Image)

Est.$3,500

1920 2c carmine, type VII, bottom left corner margin single, lightly cancelled, huge margins all around, v.f., with 2019 PFC, cat. $1500 (Cat No. 534B) (Image)

Cat. $1500, Est.$1,500

1920 1c green, used, usual centering, fine example of this rare coil, with 1987 PFC (catalogue value is for a fine copy) cat. $3500 (Cat No. 544) (Image)

Cat. $3500, Est.$1,800

1920 $2 carmine and black, center line block of four, top stamps hinged, bottom stamps n.h., well centered, v.f., with 2017 PFC, cat. $750 (Cat No. 547) (Image)

Cat. $750, Est.$500

1920 $2 carmine and black, with dramatic upward shift of the vignette, small h.r., v.f. and striking variety (Cat No. 547var) (Image)

Est.$250

1923 10c orange, imperf. horizontal pair, unused without gum as all known copies are, margins all around, v.f., only one pane was discovered and a large number of stamps were defaced with blue pencil lines and marked for destruction, with 1992 PFC, cat. $5750 (Cat No. 562b) (Image)

Cat. $5750, Est.$1,500

1923 $2 deep blue, top margin plate number block of six, n.h., well centered, v.f., cat. $1000 (Cat No. 572) (Image)

Cat. $1000, Est.$700

1923 2c carmine, n.h., fresh and fine, with photocopy of a 2018 PSE certificate for a block of four from which this came, cat. $450 (Cat No. 595) (Image)

Cat. $450, Est.$200

1923 2c carmine lake, horizontal pair, n.h., nice color, left stamp with vending machine gripper marks at upper right, v.f., cat. $650 (Cat No. 599b) (Image)

Cat. $650, Est.$250