Obverse
Double-headed eagle.
Lettering: 3 РУБЛЯ 1992Г.
AG 900 ММД 31,1
БАНК РОССИИ
Reverse
St. Petersburg Academy of Science and ship.
Lettering: ЭПОХА ПРОСВЕЩЕНИЯ ∙ XVIII В.
САНКТ-ПЕТЕРБУРГ
АКАДЕМИЯ НАУК
Extended information
Year
Denomination
Currency
Metal
Krause catalog
Y# 350
Weight
34.56 g.
Diameter
39
mm.
Thickness
3.3 mm.
Alignment
Medal ↑↑
Shape
Round
Edge
Reeded