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Re: 1837 Reeded edge half with re-engraved collar.
from Mine to Mint by Roger W. Burdette pg. 413, 4th paragraph under heading Edge Dies- Cutting Reeding "The Philadelphia Mint used a straight knurl to put reeding in the collar. The bored out collar was put in the chuck of a lathe and allowed to turn slowly. The knurl was held inside the collar while the latter revolved,… -
Re: 1837 Reeded edge half with re-engraved collar.
PocketArt: from Mine to Mint by Roger W. Burdette ... pg. 413, 1st paragraph under heading Knurl Tracking: _****"Most collar dies served their purpose without problems and modern collectors pay little attention to the edge of their coins. However, mechanical tolerances for this work were very stringent and a seemingly…
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