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<p>[QUOTE="Neal, post: 2934860, member: 43872"]Back in 1963, when I was only 13, I bought my first Roman coin, by mail order, and received a very corroded 14mm bronze of Constantine II. I "improved" it by treating it to remove the corrosion, which left a very porous coin with a few large holes. In the bottom of the larger holes there was a dark layer, which I eventually learned was a layer of lead. My questions are, first, how common was this practice, and second, how could they make the planchets with a lead center? I would not think they would have had the technology to inject it, like a jelly donut, and because lead melts at a lower temperature, a lead blank could not have been dipped in hot copper. Would they have wrapped and hammered it? But that would have squirted the lead out like stepping on a tomato. I've wondered at this for over half a century.[/QUOTE]</p><p><br /></p>
[QUOTE="Neal, post: 2934860, member: 43872"]Back in 1963, when I was only 13, I bought my first Roman coin, by mail order, and received a very corroded 14mm bronze of Constantine II. I "improved" it by treating it to remove the corrosion, which left a very porous coin with a few large holes. In the bottom of the larger holes there was a dark layer, which I eventually learned was a layer of lead. My questions are, first, how common was this practice, and second, how could they make the planchets with a lead center? I would not think they would have had the technology to inject it, like a jelly donut, and because lead melts at a lower temperature, a lead blank could not have been dipped in hot copper. Would they have wrapped and hammered it? But that would have squirted the lead out like stepping on a tomato. I've wondered at this for over half a century.[/QUOTE]
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