This collectible plate block of four 20-cent postage stamps was issued by the USPS to honor Joseph Priestley, who discovered the existence of oxygen.
Issue Date: April 13, 1983
First City: Northumberland, VA
Printed By: American Bank Note Company
Printing Method: Photogravure
Mint, never hinged condition.
We often have multiple copies of this item in stock; the plate number and/or position may vary.
1-2 business days
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