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<p>[QUOTE="physics-fan3.14, post: 4691551, member: 19165"]The difference is - the Barber half was struck with a "closed collar." Note the reeding around the edge - the reeding is struck as part of the coin. Every single coin will be the exact same diameter.</p><p><br /></p><p>However, before the implementation of the closed collar press, coins were struck in an "open collar." That is, there wasn't really anything holding the coin in and it just spread out as far as it could when it was struck. That is one reason why strike differences are so prominent between different varieties. Every single coin struck in the early mint was just ever-so-slightly different. It wasn't until 1836 when the closed collar presses were deployed.</p><p><br /></p><p>And... holy geez, get rid of that scotch tape immediately! Tape has a host of volatile chemicals and residues, and being in close contact with your coin (especially inside a capsule) that's a recipe for disaster when those chemicals react with your coin. Use almost anything else, but get rid of the tape now! (saran wrap, being a food safe plastic, won't emit harsh chemicals)[/QUOTE]</p><p><br /></p>
[QUOTE="physics-fan3.14, post: 4691551, member: 19165"]The difference is - the Barber half was struck with a "closed collar." Note the reeding around the edge - the reeding is struck as part of the coin. Every single coin will be the exact same diameter. However, before the implementation of the closed collar press, coins were struck in an "open collar." That is, there wasn't really anything holding the coin in and it just spread out as far as it could when it was struck. That is one reason why strike differences are so prominent between different varieties. Every single coin struck in the early mint was just ever-so-slightly different. It wasn't until 1836 when the closed collar presses were deployed. And... holy geez, get rid of that scotch tape immediately! Tape has a host of volatile chemicals and residues, and being in close contact with your coin (especially inside a capsule) that's a recipe for disaster when those chemicals react with your coin. Use almost anything else, but get rid of the tape now! (saran wrap, being a food safe plastic, won't emit harsh chemicals)[/QUOTE]
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Capped bust half dollar grade opinion
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