1829 Small Size

The 1829 Small Size half eagle marks the first appearance of the reduced-diameter planchet that would define the Capped Head Left series through 1834. Mint engraver William Kneass reworked the dies partway through 1829, shrinking the coin from the original 25.0 millimeter format introduced under John Reich to a tighter 23.8 millimeter blank. The change was driven by minting practicality. The slightly smaller, slightly thicker planchet struck up more cleanly under the press, sharpened the rim detail, and produced a coin whose proportions felt closer to the new contemporary style coming out of European mints. Combined Philadelphia output for the calendar year totaled roughly 57,442 pieces across both the older Large Size and the new Small Size, and Bass-Dannreuther catalogs the reduced version as BD-2 of 1829.

Authentication of the 1829 Small Size starts at the planchet itself. A genuine example measures 23.8 millimeters across versus 25.0 millimeters for its Large Size sibling, and that single gauge reading is the cleanest way to separate the two varieties. The coin was struck on a 8.75 gram blank of 0.9167 fine gold with a copper and silver alloy balance, the same standard the Mint had used since 1804, so any specimen falling meaningfully outside that weight should be set aside for further study. Diagnostic die markers on the redesigned obverse include the more compact bust outline and a noticeably smaller date logotype, both of which sit closer together than on the Large Size. The reeded edge should be sharp and continuous, and surfaces should show the flat, slightly satiny luster typical of early Philadelphia gold rather than the bright reflectivity of a modern reproduction.

For collectors today, the 1829 Small Size is one of the genuinely rare gold issues of the early federal period. Survival estimates from Bass-Dannreuther and PCGS place the known population at roughly 15 to 25 examples in all grades, and the variety is considered scarcer than the Large Size in higher Mint State preservation. Auction appearances are infrequent and typically generate strong competition when a problem-free coin surfaces. For background on the larger context surrounding this issue, see our Capped Bust Half Eagle series history.