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<p>[QUOTE="calcol, post: 2709502, member: 77639"]I don't know what was actually done in the U.S. mint, but initially creating a master hub might have some advantages over initially creating a master die. The hand-engraving would be to produce relief rather than incuse devices which might be simpler and less error-prone, especially creation of lettering. Working dies could then be produced from the master hub or a master die could be produced from the master hub. Then working hubs and dies would follow.</p><p><br /></p><p>Hubs have been used since at least Roman Republican times. A number of ancient hubs have been discovered For example, see: A Hub from Ancient Spain by M. P. Garcia-Bellido and S. Rovira, The Numismatic Chronicle, Vol. 146 (1986), pp. 76-84, and The Hub from Ancient Spain Reconsidered by C. Stannard, The Numismatic Chronicle Vol. 148 (1988), pp. 141-143.</p><p><br /></p><p>Cal[/QUOTE]</p><p><br /></p>
[QUOTE="calcol, post: 2709502, member: 77639"]I don't know what was actually done in the U.S. mint, but initially creating a master hub might have some advantages over initially creating a master die. The hand-engraving would be to produce relief rather than incuse devices which might be simpler and less error-prone, especially creation of lettering. Working dies could then be produced from the master hub or a master die could be produced from the master hub. Then working hubs and dies would follow. Hubs have been used since at least Roman Republican times. A number of ancient hubs have been discovered For example, see: A Hub from Ancient Spain by M. P. Garcia-Bellido and S. Rovira, The Numismatic Chronicle, Vol. 146 (1986), pp. 76-84, and The Hub from Ancient Spain Reconsidered by C. Stannard, The Numismatic Chronicle Vol. 148 (1988), pp. 141-143. Cal[/QUOTE]
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