2008 United States issue a strip of 4 self-adhesive stamps, showing American Scientists: chemists, astronomer, physicist. Scott 4227. We offer the sheet containing 5 sets: see scan.  Mint, Never Hinged. *S&H: UNITED STATES: $3.00; CANADA:  - WAIT FOR OUR INVOICE: $2.50; WORLDWIDE: $6.00. ALWAYS ASK FOR OUR INVOICE! PLEASE! **For same topic or country material, see our eBay store! 

***COMBINE PURCHASES! SAVE ON SHIPPING AND HANDLING: WHEN YOU PURCHASE MORE THAN 1 LOT AND WISH TO SAVE SIGNIFICANTLY ON S&H, PLEASE, USE THE eBay "SHOPPING CART" OPTION! IF YOU ARE IN CANADA, ALWAYS USE THE "SHOPPING CART" OPTION! ALWAYS WAIT FOR OUR INVOICE!