US Stamps Lot of 1850’s pairs USED. 7 All 1850’S Perf And Imperf Pairs Fresh And Clean Unsearched Nice Lot. The item “US Stamps Lot of 1850’s pairs USED” is in sale since Thursday, October 12, 2017. This item is in the category “Stamps\United States\1901-Now\ Used”. The seller is “anthonysnj-stampsandcoins” and is located in Englewood Cliffs, New Jersey. This item can be shipped worldwide.