Heath's greatly improved and enlarged infallible government counterfeit detector, at sight :
the only infallible method of detecting counterfeit, spurious, and altered bank notes, government bonds, etc.; applicable to all banks in the United States and Canadas, as now in circulation or that may be issued, with genuine designs from the original government plates.

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Full view   University of Illinois at Urbana-Champaign
Full view   University of Illinois at Urbana-Champaign