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Closed collar/open collar & Reeded vs. Lettered edge

When did half dimes, dimes, and quarters start having reeded edges? When did they start minting them with closed collars? I thought the 1836 half dollar was the first reeded edge coin, but I saw several quarters and dimes in the 'teens that had reeded edges. Also, it is with closed collars that coins finally started being perfectly round, or am I confused?
Tom
Tom
Tom
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The Capped Bust half dimes (1829 - 1837) and the Liberty Seated half dimes (1837 - 1873) were all struck in a closed collar, with the reeding imparted by the collar - the third die. The Flowing Hair (1794 - 1795) and Draped Bust (1796 - 1805) half dimes were struck in an 'open collar', which also imparted the reeding, although the reeding is typically weak for these dates. Off-center pieces will often exhibit no reeding along the opposing edge. Despite the common misconception, the Castaing machine was not used to produce the edge reeding on the half dimes.
Tom
<< <i>When did half dimes, dimes, and quarters start having reeded edges? When did they start minting them with closed collars? I thought the 1836 half dollar was the first reeded edge coin, but I saw several quarters and dimes in the 'teens that had reeded edges. Also, it is with closed collars that coins finally started being perfectly round, or am I confused?
Tom >>
The 1836 Reeded Edge half dollar was the first coin struck on a steam-powered press, not the first coin struck in a closed collar.
Tom D.
Close collars began in the 1820s and 30s--dimes: 1928; half dimes, quarter eagles, and half eagles: 1829; quarters: 1831; halves and dollars: 1836; eagles: 1838. I'm note sure whan copper started using close collars, but by 1837 the diameter had become standard on large cents.