The ACM test note is virtually unknown. As far as I know, there are three out there, and I have one. I know where the other two are, but I can't say. They were obtained by their current owner from two separate dealers a long time ago.
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BWJM, F.O.N.A.
Life Member of CPMS, RCNA, ONA, ANA, IBNS, WCS.
President, IBNS Ontario Chapter.
Treasurer, Waterloo Coin Society.
Show Chair, Cambridge Coin Show.
Fellow of the Ontario Numismatic Association.