"50 Years of the Republic"
Composition: nickel
Diameter: 28.00 mm
Weight: 7.00 g
Mint: Royal Canadian Mint (Winnipeg, Canada)
A 10.000 dollars silver collectors' item was released also:
Composition: silver .999 (gold plated)
Diameter: 38.00 mm
Weight: 31.39 g
Mint: Royal Canadian Mint (Winnipeg, Canada)
Mintage: 1.500
(images from en.ucoin.net and en.numista.com)
(news from Guillermo Granados)
LINK: Bank of Guyana