1806 6 over Inverted 6

The 6 over Inverted 6 is the curiosity variety of the 1806 year and one of the better-documented die errors in the early federal silver series. A Mint worker preparing a fresh obverse die for the production run punched the final digit of the date upside down by mistake, then corrected the error by driving a properly oriented 6 over the inverted impression. On surviving coins the remnants of the inverted digit remain visible inside and around the corrected 6, with the inverted loop appearing roughly opposite the final loop and reading at a glance almost like a backwards 9. Bowers documents the marriage in his standard half dollar reference, and Overton catalogues the die pair within the year's listings.

The variety is best authenticated under magnification at the date itself. A genuine example shows a clear secondary curve inside or just below the bowl of the 6, with the inverted impression running counter to the corrected punch. On well-circulated coins the inverted loop softens but rarely disappears entirely, while on Fine and better grades the diagnostic is unambiguous. The pairing is a die error rather than an overdate, so the underlying digit reads as a 6 rather than a 5, distinguishing this variety cleanly from the 6 over 5, Large Stars on the same year. Standard 1806 authentication discipline applies: lettered edge FIFTY CENTS OR HALF A DOLLAR must be original, weight should sit near 13.48 grams, and PCGS or NGC encapsulation with the variety attribution on the label is the practical floor for paying any premium.

Demand for the inverted-6 variety sits in a different lane from the overdate. The overdate gets the institutional bid from type and variety collectors; the inverted 6 attracts a smaller but loyal specialist audience that values die errors as a category. Premiums over the standard 1806 varieties run modest in low circulated grades and widen in problem-free XF and above, where the population is shallow enough that single original-skin coins can command material runups when fresh to market. Cleaned and retoned examples are common, so original surfaces matter more than the holder grade alone. For the broader story of Robert Scot's design, the 1807 Capped Bust transition, and the series' production arc, see the Draped Bust Half Dollar series history.