Nice Stamps/Covers – See Scans for Details & Condition. See Our Store for Many More Stamps. The item “$US Sc#6 type 1a used, average, rare stamp, Doporto Cert, Cv. $10,000″ is in sale since Wednesday, December 13, 2017. This item is in the category “Stamps\United States\19th Century\ Used”. The seller is “suncoaststamp” and is located in Sarasota, Florida. This item can be shipped worldwide.