1991 - Centennial of the National Geological Institute

1991 - Centenario del Instituto Geológico Nacional

Owner	Manuel Briones
Observations	Calcite.
Country	Hungary
Face value	60
Year	1969
State	Used
Status	Interchangeable
Category	Minerals
Format	Vertical
Color	Multicolor
Other information	Perforated stamp
visualizations	66