1921 overprinted in black, 5fr carmine & black, overprinted (typo) Congo Belge, n.h., v.f., with handstamped guarantee marks, cat. €410 (Cat No. COB 93A) (Image)

Cat. €410, Est.$300

1921 overprinted in red, 10fr black & green, overprinted (typo) Congo Belge, short perfs at top, with handstamped guarantee mark, signed Diena, cat. €730 (Cat No. COB 94B) (Image)

Cat. €730, Est.$300

1949 UPU, 50c-5r, set of twelve specially prepared miniature sheets, including four from Ruanda-Urundi (plus the regular four sheetlets full size, not overprinted) n.h., v.f., scarce (COB Bloc 3a-10a, Euro 3,250+) (Image)

Est.$1,000

1949 UPU, 50c-5r, complete set of twelve specially prepared mini-sheets, including four from Ruanda-Urundi, n.h., fine-v.f., cat. €3250 (Cat No. COB Bloc 3a-10a) (Image)

Cat. €3250, Est.$1,000