New bimetallic commemorative:
“Sanjiangyuan National Park“
TECHNICAL DATA
External ring: brass
Center disc: copper-nickel
Diameter: 27.00 mm
Weight: 9.10 g
Thickness: 2.10 mm
(news and image by Wenbo Dong)
New bimetallic commemorative:
“Sanjiangyuan National Park“
TECHNICAL DATA
External ring: brass
Center disc: copper-nickel
Diameter: 27.00 mm
Weight: 9.10 g
Thickness: 2.10 mm
(news and image by Wenbo Dong)
