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<p>[QUOTE="Conder101, post: 5291468, member: 66"]The early mint workers also had the problem that they didn't know the precise composition of the steel, nor could they accurately judge the heating temperature.</p><p><br /></p><p><br /></p><p>Just two that we can be sure of because the dies were used both pre and post overdating. A die represented a lot of time and effort to produce and the time it was most likely to fail was during the quenching. So if you had a perfectly good hardened die of the previous year, you were much more inclined to use it as is rather than risk losing it during a second quenching cycle. The two they did do it with had short use lives afterward as well. (1806/5 quarter and half dollar)[/QUOTE]</p><p><br /></p>
[QUOTE="Conder101, post: 5291468, member: 66"]The early mint workers also had the problem that they didn't know the precise composition of the steel, nor could they accurately judge the heating temperature. Just two that we can be sure of because the dies were used both pre and post overdating. A die represented a lot of time and effort to produce and the time it was most likely to fail was during the quenching. So if you had a perfectly good hardened die of the previous year, you were much more inclined to use it as is rather than risk losing it during a second quenching cycle. The two they did do it with had short use lives afterward as well. (1806/5 quarter and half dollar)[/QUOTE]
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