2005
21 PESOS BUTTERFLY TETE-BECHE
Tete-beche pair of 2 blocks of 4 of the 2005 Butterfly definitive. A limited number of sheets of the 21-peso denomination were printed with rows of blocks of 4 running in opposite directions. The above from the 2 middle rows.

It is not known how many sheets were printed this way but the sheets were offered for sale only for a brief time and withdrawn.

3.01.2007