Englewood Cliffs NJ 07632. The item “US Stamps Early mint & used Key Stamp Selection Scott Value $6,000.00″ is in sale since Tuesday, March 08, 2016. This item is in the category “Stamps\United States\Collections, Lots”. The seller is “anthonys1-800-451-9645″ and is located in Englewood Cliffs, New Jersey. This item can be shipped worldwide.