Michel # 136; Scott # 1045; Stanley Gibbons # 132;
	The Whooper Swan . Cygnus cygnus.
	Color: green
	Date of Issue: 19.07.1951
	Face Value: $ 50
	Designer: no information
	Stamp Size: 18.5 × 21 mm.
	Stamp Quantity: 99 350
	Perforation: 12½

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