Thanks for the reply. Based on your response, I am trying to understand the valuation process. Looking at the categories defined in StampManage, I came up with the following Matrix (see below). Is this a fair representation on how to classify the value categories? What is the difference between NH and mint? Is Mint simply a stamp that is not used (does not have cancellation)? Could Mint have NG, RG, or HINGE, and thus have different "MINT" values?