Michel # 645; Scott # 620; Stanley Gibbons # 769; Yvert # 634;
	The Butterfly Cone . Conus prometheus.
	Color: multicolored
	Date of Issue: 15.06.1981
	Face Value: 2.50 E
	Designer: no information
	Stamp Size: 37 × 25 mm.
	Stamp Quantity: 500 000
	Perforation: 12:12½

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