1967, 11 September. 4e Conference O.U.A, no’s 646-651

Originally issued in 1964, 15 September. Palace of The Nation “Leopoldville” by the Republic of Congo, no’s 563-566

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 (10 x 10)

Circulation:

 

The series:

No.646 1K on 2Fr. (no.553) red-brown

No.647 3K on 5Fr. (no.556) eggplant

No.648 5K on 4Fr. (no.555) orange

No.649 6,60K on 1Fr. (no.552) light blue

No.650 9,60K on 50c (no.551) violet

No.651 9,80K on 3Fr. (no.554) green

The series:

 

The series with reversed overprint:

 

651-Dr. Error 9,80K on 3Fr. (no.554) green (in O.C.B.):

 

In the O.C.B. 651-Dr. Error is listed as 9,80K on 3Fr. (no.554) green, this should be 9,80 on 5Fr (no.556). 9,80K on 3Fr is the normal stamp of the series (no.651).

651-Dr. Error 9,80K on 5Fr. (no.556) eggplant (in O.C.B.):

 

649-Dr. in each sheet of 100 stamps, on position 40 we find 6,60K on instead of 9,80K (not in O.C.B.):

 

In each sheet of 100 stamps, on position 20 we find an “a” which is not fully closed

The first example is the normal one, the second with “open a”:

 

 

“Moved” overprints are not uncommon, straight or slanting, here are some examples:

 

There are many examples of recto versa, here one on no.649:

 

In the post office of Matadi, the director of the post issued overprint(s), which were not officially issued but nevertheless officially sold. This form of “corruption” is rare:

 

This could be another example, but I am not 100% sure: