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STILL MORE ON SECRET COMPARTMENT COINS
The MicroRoo, made from an actual Australian $1 coin, has the capacity to encapsulate the Micro SD memory card. Ken Berger writes: These hollow coins were referred as spy coins. Please see the Dereu & Sons Mfg. Co. website: spy-coins.com .Also see the FBI website: www.fbi.gov/about-us/history/famous-cases/hollow-nickel . William Mills writes: Thanks for the E-Sylum's! I am reading this one in the airport at Kuala Lumpur. I just wanted to add that I have in my collection what appears to be a contemporary Paraguayan 1870 4 Centesimo that is hollowed out. The obverse and reverse screw together. From the toning I would say it dates from the era that the coin was manufactured. Why it was made is anyone's guess.
To read the earlier E-Sylum article, see:
MORE ON SECRET COMPARTMENT COINS
(www.coinbooks.org/esylum_v14n40a10.html)
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