1932 15k gray black, imperf. left sheet margin single, l.h., v.f., signed Stolow, only 100 printed (Cat No. C25c) (Image)

Est.US$3,000

1937 Jubilee Aviation, 1r red brown & black, imperforate vertical pair with large margin at bottom (confirming it was not cut from the souvenir sheet), unused without gum as issued, v.f., with 1999 Mandrovski certificate (Zverev $7,500 for a single with margin) (Cat No. C75var) (Image)

Est.US$5,000