1968, July. Palace of The Nation, 1968. No’s 663-666

Originally issued in 1964. Palace of The Nation “Leopoldville”

Design: Jean van Noten (1903-1982)

Paper: with silk tread

Printer: Hélio Courvoisier, s.a., La Chaux De Fonds (Switzerland)

Overprint:

Perforation: 11.5

size:

Sheet: 100 (10x 10)

Circulation:

 

No.663 1K on 2Fr, red-brown (no.553)

No.664 2K on 50c, violet (no.551)

No.665 2K on 50c, violet (no.551)

No.666 9,60K on 4Fr, orange (no.555)

The series:

 

663-Cu Reversed overprint:

 

“Moved” overprints are not uncommon for no.663, straight or slanting, here are some examples:

 

This is probably from a proof to cover the old value: