A 20th century counterfeit detector. Extended title reads: "Counterfeit Money 'G': Bankers, Merchants and Cashiers Confidential Guide, Ready Reference for Money Handlers."
This title is in-copyright. Snippets will appear in NNP search results.
Extended title reads: "Observations upon the Method of Bank Note Manufacture: Unerring rules for the detection of counterfeit and spurious paper money"
Extended title reads: "The Universal Bank Note, Draft and Check Detector, for Detecting All Classes of Counterfeit Bills, Drafts and Checks of All Bank in the United States"
Extended title reads: "Counterfeit Bank Note Expositer, Or, A Short System of Detecting Counterfeit Bank Notes With Certainty, Independant of a common Counterfeit Detector"