If you sell currency as a collectible, people are going to want a high-quality scan on the product page to confirm that the note is as described; a few folds ca

If you sell currency as a collectible, people are going to want a high-quality scan on the product page to confirm that the note is as described; a few folds can subtract hundreds of dollars from the sales price. There's a couple firms who maintain reference catalogs for this sort of thing. At least one of them regularly asks for 300-dpi scans of new issues so they can keep the book (which is now basically a PDF released as a subscription) up to date.