1969-D LMC On Wrong Planchet

No can't be that. The Panama coins were struck on the same planchets as US coins. I can't find anything that we struck for someone else in 1968 or 69 that would match the size and weight of your coin and be magnetic. In fact the only magnetic planchets we struck in those years were the pure nickel ten cent pieces for Canada (17.9 mm 2.07 grams) and the 1968 stainless steel 5 centimos for Costa Rica (15 mm .88 grams) Only things magnetic in 1967 were the 5 and 10 centimos for Costa Rica. (5 same specs as in 68, 10c 18 mm, 1.75 grams) And the Canada coins were struck in Philadelphia, the Costa Rica coins were struck in San Francisco. Nothing magnetic was struck in Denver an any of those years.

Is it strongly magnetic or just weakly magnetic?

The closest I can come is in 1969 Denver struck 10 and 25 sentimos coins for the Phillipines out of a 70% Cu 18% Zn 12% Ni alloy that might be slightly magnetic, I'm not sure. But the 10 is too small and too light, and the 25 is too larger and too heavy. But if they ran the strip for the 25 sentimos through a cent blanking press they would be about the same size and weight of your coin and maybe slightly magnetic. It's far fetched but the best thing I can see. Problem is, where are all the rest of those cent blanks punched from Phillipines strip?

Ok

Hi,

It's still corroded and is nothing unusual. .44 grams is not a lot of weight. The corrosion will add that much to the coin as will whatever other crud has accumulated on it.

Most any metal detector hobbyist will tell you that this coin looks like thousands of others that were buried in the soil and corroded therein.

So whether it is strongly magnetic, weakly magnetic or non-magnetic doesn't really enter into anything other than to be a curiosity. The coin is still just a corroded clunker.

Thanks,
Bill

CC is CopperCoins:-)

I have a lock on the RK grading scale though:-) For example, the coin above is an RK-65. The scale is a 70 point scale where the highest number is the most destroyed coin.

RK=RoadKill

Have Fun,
Bill

A weak magnetic attraction can be produced by nickel plating. A magnetic attraction can also be produced by inserting a pellet of steel or a tiny magnet into the coin through the edge. It's a type of Magician's coin. While I cannot totally dimiss the idea of a steel planchet or one composed of pure, elemental nickel, it's a long shot.

Well it's strongly attracted so that pretty much rules out a plating (It might be possible if the plating was thick enough. But for a plating to be thick enough to account for the extra weight it would have to be .004 inches thick or 20 times as thick as the plating on our current coins. And I still have my doubts if that would result in a strong attraction.) A steel ball or magnet slipped in through the edge might be possible, but it would be strongly attracted in only one area. I think we can probably rule out a steel planchet because a steel planchet the size of a cent would weigh 20% less and this one weighs 14% more than a regular cent. In order for a steel planchet to do that it would have to be 40% thicker than a normal cent, or not quite as thick as the coppernickel cents of 1859-64. And that is something you would definitely notice.

It would seem to me that a pure elemental nickel planchet would fit the bill fairly nicely. It would only have to be about 10% thicker to account for the extra weight, and would be strongly magnetic. The only problem then is that nickel doesn't normally corrode like that shown in the pictures, but it is possible. And I would have to disagree with Bill, if it turns out to be on a pure nickel planchet, even corroded it's not just a clunker.

ok