Hi,i have a second hand ELC A-2 in seal HH. The original owner told me this is a house model he ordered sometime before 2005.The contract number on the label states: contract No W535 AC 23373 Eastman Leather Clo. If I am correct, is this not a J.A. Dubow contract number? Is it common for Eastman to use a actual contract number on a house model?