1850-58 18k vermilion, pale red, two distinct shades, the former signed Engel, Dr.Bohne, h.r., margins all around, v.f., with 1976 GPS and 1992 Philatelic Foundation certificates, cat. $1160 (Cat No. 14,14a) (Image)

Cat. $1160, Est.US$300

1878 50pf brown, h.r., excellent color, h.r., centered to left, fine example of this rare unused stamp, with 2019 Sismondo certificate, cat. $800 (Cat No. 45) (Image)

Cat. $800, Est.US$200