(1.) The circles around the numerals of value are double lined. (2.) Neither of the 5's touch the circle. (3.) Exp:do. Ref: Varro Tyler, "Focus on Forgeries"
Russia, Army of the North Forgery
Russia, Army of the North, Forgery of #1
1.) Both circles are almost solid, rather than double lined. 2.) One or both 5's touch the circle. In this case both of them do. Exp:do. Ref: Varro Tyler.