Speaking of unexpected realizations at auction, here is a link to a counterfeit detector I had not heard of. It's the "National Bank Note Reporter and Financial Gazette (Formerly Mendelson's)."

A stained and tattered, with pieces missing, copy of the 15 July 1872 number of this periodical appeared on eBay this week. My snipe was left far in the rear as the lot went to $760 on nine bids from six bidders. This is a newsprint publication lacking the intaglio plates and other features that make some detectors so popular. I've never come close to spending that much for a Heath.