Far better to do your own, Oxford. If you're not too up on database software, use a spreadsheet. If you're not too up on spreadsheets, what better way to learn than with something you're interested in, rather than someone else's meaningless tutorials. My Excel workbook has 200 fields for each coin, but that's ridiculous, and because it has evolved over many years, rather than been designed. Only put in what you actually need, not everything you can, and you're more likely to end up with a sensible list, like Rob's!