1855 Arrows, 55 over 54 Proof

The 1855 Arrows 55-over-54 proof is the proof-finish version of the only true overdate in the Seated Liberty half dollar series. An overdate is a working die finished with one year's date that was pressed back into service the next year by driving a new digit over the old one. Here, a die finished for 1854 had its final 4 partially obliterated and a 5 punched in its place, leaving the crossbar of the underlying 4 trapped inside the loop of the corrected 5. Walter Breen identified the variety in 1971 on a business strike and credited the proof discovery to Q. David Bowers. PCGS, NGC, and CAC all recognize the proof overdate as a distinct issue under Wiley-Bugert WB-102 (Cherrypickers' Guide FS-301). The 759,500 figure on this page is the combined Philadelphia business-strike delivery for all 1855 varieties and has no bearing on the proof, which the Mint did not separately record. Modern census work places confirmed survivors at roughly six to eight pieces, putting the issue in the Sheldon R-7 range.

Authentication requires both the overdate diagnostic and the proof finish to read cleanly. Under a 10x loupe (a jeweler's magnifier), the right-leaning crossbar of the buried 4 should sit visible inside the loop of the second 5; on the proof state the undertype reads as a die-struck feature sharper than on most business strikes because proof dies were freshly prepared. Surfaces must show deeply mirrored watery fields with controlled die-polish lines under magnification, rims squared perpendicular to the field rather than rolled, and denticles (the tooth-like beads ringing the rim) fully formed on both sides. Weight must hold at the post-1853 12.44-gram standard; anything near the pre-1853 13.36-gram weight is disqualified. Prooflike 1855 business strikes occasionally surface and can fool a quick look, so the structural rim and denticle signatures matter as much as reflectivity, and PCGS or NGC encapsulation with documented pedigree is functionally required.

For collectors, the 1855-over-54 proof is a chronicle entry rather than a working acquisition target. Public appearances are separated by years, and a surfaced example draws overlapping demand from variety specialists pursuing the only Seated half overdate, proof-half specialists working the pre-public-sales stretch (formal proof sales did not begin until 1858), and type collectors closing the Arrows subtype. The Regular classification follows site convention for proof entries; the R-7 survivor count is carried by the prose rather than the badge. A PCGS Proof-64 from the Gardner Collection brought $30,550 in 2014, and a Proof-65 with Norweb provenance traded in the mid-five figures in 2015 and 2019. For background on the Arrows weight reduction and the pre-1858 proof program, see the Seated Liberty Half Dollar series history.