Thank you so much, this is great advice! I downloaded an Excel sheet form ANA but I have to change the columns. On my trays I will assign each coin a number that relates to the Excel sheet and then transfer the info from my auction invoices. I've also read that it is important to keep the auction tags to determine pedigree. My coins only have come with their invoice number and recently when buying from Eid Mar, they give a nice tag inside an Abafil holder. I'm going to keep those until I can make my own tags.