On January 25, 2022, Colombia issued the stamps identical to those released on December 20, 2021 by Mexico to celebrate 200 years of relationship (1821-2021). This joint issue, first reported by Don Birschel (USA), became actually a concerted issue [C] for which not all information is available. Both countries issued a se-tenant pair of symmetrical design stamps showing the figure “200” and a stylized butterfly with the colors of the countries’ flags. While Mexico announced the issue of 50,000 pairs of stamps in panes of 25, the stamps of Colombia apparently produced in panes (size unknown) at 14,000 samples (probably 7,000 pairs), have been seen already in souvenir sheets of [1px2] and [1px3], but also in blocs of [2px2]. The Mexico stamp is self-adhesive. Additional information is needed here, but the catalogue (Volume 14) has already been updated with these first data.