Michel # 1993; Scott # 1725; Stanley Gibbons # 1973; Yvert # 1843;
	The Black Grouse . Tetrao tetrix.
	Color: multicolored
	Date of Issue: 28.02.1970
	Face Value: 3.40 Zl
	Designer: Desselberger
	Stamp Size: no information
	Stamp Quantity: 1 998 000
	Perforation: 11½

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