Chemical.

Owner	Herman Cudris Castañeda
Observations	Mi:CS 863, Sn:CS 657, Yt:764, Sg:CS 827, Afa:CS 708, Pof:CS 787 - Print run of 55,915,000
Country	Czechoslovakia
Face value	3 kes. (Co
Year	1967
State	Used
Status	Exhibition - Non-transferable
Category	Science
Format	Vertical
Color	rosa vieja
Other information	Perforated stamp Air mail
visualizations	171