Check the listing for details. Harriet Tubman Civil War Underground Railroad Mint condition US Postage Stamps. Condition: New. Listed at 3.65 USD. For sale is a collection of 2 quality, mint condition, post office fresh United States postage stamps featuring Harriet Tubman. This collection provides a glimpse into the life of famed abolitionist and Civil War era underground railroad conductor Harriet Tubman. Both stamps are in their original as issued mint condition. Issued on February 1, 1978 and June 29, 1995 these stamps still serve as valid United States Postal Service postage today. Perfect for collecting, gift giving or postal use. These vintage stamps will make a fine addition to any Civil War or Tubman collection. Or consider this colorful selection as a perfect gift for any 'hard to shop for' character on your list. They will also provide standout detail to any mail addressed to friends or fellow Harriet Tubman historians. Your stamps will be enclosed in a protective clear-view display card and be sent USPS First Class Mail.