Argentina 5 Pesos Gold - Coin Community Forum

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Jaobler Pillar of the Community United States 6381 Posts	Posted 04/30/2007 1:15 pm Good morning, Here is a gold 5 peso "Argentino" coin I bought while in Buenos Aires a few years back. I consider it to be BU, probably only MS61 or maybe 62 due to the obverse scuffing. However, I'm puzzled by some circular raised lines on the obverse. These are most noticeable on the neck and the lower left portion of the portrait. They look like die polish lines, but I've never seen circular ones before. Is it possible some kind of rotating grinder was used to polish the die, resulting in this unusual pattern? I'd appreciate any input. It's a puzzle to me! Report this Post to the Staff

Jaobler Pillar of the Community United States 6381 Posts	Posted 05/02/2007 6:03 pm Hah! I think I may have answered my own question! I printed out my photo and drew diagonal lines to locate the center point of the coin. I made a compass using two pens and some rubber bands (ingenious, if I do say so myself!) and drew some concentric circles on the photo. The raised lines parallel my circles very nicely which tells me they are also concentric. I don't know how they made coinage dies in Argentina in the late 1800s, but I'm speculating that they might have turned the blank die on a lathe and used a cutting tool to smooth the flat face. If they allowed the cutter to dig too deep into the face, it would have left concentric grooves. If when they engraved the coin design they failed to completely efface the grooves, any coin subsequently struck from that die would have raised lines arranged in a concentric pattern, just like the lines on this coin. Does that sound plausible? Do we have any mechanical types in the forum that can offer another explanation? Report this Post to the Staff
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