I told you zinc was lousy as a coin material back in May, 2016.

Now look: I found this 2001 2 centimo Euro coin in a crack of the ancient Roman aqueduct of Segovia, Spain (a 5 minute walk from our apartment). Someone thought it would be clever to hide acoin in one of the deeper seams of the 1900 year old granite structure.

As you can see, the zinc sort of exploded into decay over the years after being exposed to moisture and some cold and heat. The copper plating on both sides is in good shape so the date and otherdetails are clearly readable.

This coin wreck proves the report that you can dissolve the zinc out of a U.S. cent or a 1 or 2 Euro centimo coin leaving a fragile copper shell. As this snapshot shows, while the inner zinc hasgone to pot, the copper faces of the coin are still preserved. Coins in the fountain? Bad idea. Zinc begins corroding in 48 hours. No wonder many banks refuse to accept corroded coins at full facevalue.

A point from the "Zinc, you stink" article of 2016 -

Zinc is the cheap grey metal that is the material of choice when a government looks to make a near valueless coin. The thought of not making a coin so valueless does not seem to enter the minds ofgovernmental leaders worldwide. Zinc is an apology by a government too cheap to produce a copper coin and too cowardly to abandon that now useless coin that no citizen really wants or uses.

To read the earlier E-Sylum article, see:
GARY BEALS: ZINC, YOU STINK! (https://www.coinbooks.org/esylum_v19n22a13.html)