1888 10c blue, n.h., well centered, v.f., with photocopy of a 2019 PFC for a block of four from which it originated, cat. $1150 (Cat No. E2) (Image)

Cat. $1150, Est.$800

1888 10c blue, n.h., fresh and v.f., with a photocopy of a 2019 PFC for a block of four from which it originated, cat. $650 (Cat No. E2) (Image)

Cat. $650, Est.$400

1894 10c blue, bottom left corner margin single, n.h., well centered, fresh color, v.f., with 2019 PFC, cat. $2000 (Cat No. E4) (Image)

Cat. $2000, Est.$1,300

1902 10c ultramarine, top margin plate number single, n.h., fine, with 2018 PFC for a pair from which it originated, cat. $500 (Cat No. E6) (Image)

Cat. $500, Est.$250

1902 10c ultramarine, top sheet margin Plate Block of eight, n.h., folded vertically between stamps, centered to top, perf. separations, fresh and very good multiple, cat. $5750 (Cat No. E6) (Image)

Cat. $5750, Est.$500

1908 10c green, top margin imprint single, n.h., near perfect centering, with 2004 PSE certificate graded "XF-Sup 95" (SMQ $600) (Cat No. E7) (Image)

Est.$400

1922 10c deep ultramarine, n.h., well centered, with 2018 PFC graded "XF 90" (SMQ $275) (Cat No. E12a) (Image)

Est.$150