U.S. #1685
1976 13¢ Chemistry Centenary
Issue Date: April 6, 1976
City: New York, NY
Quantity: 158,470,000
Printed By: Bureau of Engraving and Print
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U.S. #1685
1976 13¢ Chemistry Centenary
Issue Date: April 6, 1976
City: New York, NY
Quantity: 158,470,000
Printed By: Bureau of Engraving and Printing
Printing Method: Photogravure
Perforations: 11
Color: Multicolored
The Chemistry Centenary stamp was issued in conjunction with the 100th anniversary of the American Chemical Society.
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