North Vietnam, 20 Years Vietnamese Women Movement, October 20th, 1966, Michel Nr. 455; A single stamp in a 12 xu nominal was issued in perforation 11.0
This stamp was not officially released im-perforated however a handful of im-perforated trial proofs, here from the top margin, have come to market. Note the slightly pale background color of the proof.
Registered letter mailed on October 20th, 1966 to Klewitz featuring one of the stamps. The overall postage amounted to 1.13 Dong which was a tad above the required tariff of 1.10 Dong for a standard letter to West Germany.
Registration Nr. 101410