Siberian Pit Viper (Ancistrodon halys) 20 Mongolian möngö — Mongolia, 1972
Siberian Pit Viper (Ancistrodon halys) (Mongolia, 1972), face value 20 Mongolian möngö, “Endemic amphibians and reptiles” series. Photo, catalogue value…
- Series
- Endemic amphibians and reptiles
- Issue date
- 1972
- Face value
- 20 Mongolian möngö
- Colors
- Multicolor
- Yvert
- MN 632
- Michel
- MN 714
- Stanley Gibbons
- MN 689
- Scott
- MN 678