Do we have a complete listing of all editioons and formats of Heath's Counterfeit Detector? I am interested in knowing which plates accompanied which editions. Also I noticed while perusing Google Books that the Treasury Department ended up confiscating a number of plates and prints from Heath. Has anyone written that up?
I'm headed to Morocco for a Meteorite Conference and will be incommunicado for about ten days. I look forward to finding out more about this and other "detectors" on my return.
I just joined SPMC. I teach several courses here at Duke University. Check me out at:
Looking forward to meeting some of you in the weeki ahead.