VickySilver

This just sold at auction for 160,000 Swiss Francs, so I guess with commission just over that in pounds...Sorry no pictures here for now. Very rare and right up my alley but WAAAY out of my affordability range. I have the die module/trial for the reverse gotten some years ago but not nearly as exciting as this one.

I have thin planchet struck pennies, threepence, shillings, and I think halfpennies - all this much more common in the late '50s to '60s. So legit specimens do exist and probably not all that valuable but interesting none-the-less.

It is from the die [skip] rotating about an axial radius and can affect other areas depending on the axis.

I think some have called that "skip" with the die slipping on strike...Something of that sort...Comes with a shelf-like appearance at the date and occasionally other devices.

Indeed, as have I. However, the mint did "flub" on occasion and struck coins on thinner planchets. I bought a bunch of them as a lot from London Coins about 10 years ago. Have a few others and thrown in were some off metal strikes and off center, etc.

My chemistry classes and background beckon, and they say, well that it is an oxidant that chemically further oxidizes the surface for removal of the top layers of the coin. Ammonia does not react with the metal surfaces so would in fact be less aggressive.

I bought this coin some years ago at, I believe, DNW (Noonan’s) or perhaps Baldwin’s. It looked like the real thing but PCGS called it counterfeit. I have a currency 1964 double reverse error confirmed but thought this bit unusual in that it was a proof only year. i looked for seams or signs of them around the edge and then, where it is sometimes seen, just inside the rim on both sides looking for a seam or the residuals of such but could find none. It weighed on balance scale (ok, old fashioned) 9.19 gms so just a bit light compared to the standard 9.4 gms. So below are some pictures and I know the usual caveats but curious if any are oreoared to advance any opinions - I might not, LOL. I might need some help if anybody wants to email me as I can’t figure out how to compress on thi newer iPhone.

Hmmm, I vote for a bit less aggressive. My fave is clear ammonia, diluted 1:1 that haw worked well on CuNi or silver coins. Try it on some cheaper bits and think you will likely see....

Sad to hear. As you will recall olive oil has an acidic pH and so not for lustrous copper coinage as you've found out.

Yikes! Not a buyer at that for sure. Too bad as I have my own "pet" collection of 1887 Young Head silvers as you might imagine. What did the currency Gothic go for?

Yes, I noticed that too - relative rarity - but maybe dependent on demand as well?

Yes, I agree that the coin is generally scarce & got a couple a few years ago, one came up MS65 at PCGS & thought it might even go higher...