The specifications of the Capped Bust Half Dimes are somewhat different compared to the earlier half dimes which were struck until 1805. When the new series was introduced in 1829, the diameter was 15.5 mm, compared to the previous standard of 16.5 mm. The weight of the coins remained the same at 1.35 grams (20.85 grains). The composition also remained 89.24% silver and 10.76% copper. All coins were struck with a reeded edge.
Production took place at the second Philadelphia Mint with improved technology. The coining press used a close collar, which would strike all three surfaces of the coin (obverse, reverse, and edge) at the same time. Previously, the reeding or lettering on the edge was applied in a separate procedure. The close collar standardized diameters and allowed metal to flow into the deepest areas of the die, improving strike quality.
The higher mintage levels and advancements in technology result in more higher grade, attractive examples being available when compared to the earlier half dimes. However, over the years some pieces (even or especially so in high grade) may have been cleaned, damaged or otherwise impaired. Coins which exhibit original and appealing coloration command a premium.
Uncirculated examples are available for all dates, giving type set collectors the opportunity to acquire a nice specimen for a relatively little amount of money.