How to Identify the Hawaiian Sesquicentennial Half Dollar

What This Coin Is

Struck only in 1928, the Hawaiian Sesquicentennial Half Dollar commemorates the 150th anniversary of Captain James Cook's arrival in the Hawaiian Islands. Its concept came from Hawaii-based artist Juliette May Fraser, with the dies modeled by sculptor Chester Beach. It had a very limited original mintage and a high issue price, making it one of the scarcest and most valuable coins in the classic commemorative half dollar series.

Obverse Design & Inscriptions

The obverse shows a bust of Captain James Cook. "HAWAIIAN SESQUICENTENNIAL" appears in the legend along with the dates "1778-1928," marking the years between Cook's arrival and the coin's issue.

Reverse Design & Inscriptions

The reverse depicts a standing Hawaiian chief in a feather cloak, holding a spear, with an island landscape in the background. The design draws on traditional Hawaiian royal imagery to represent the islands' heritage.

Size, Weight, Metal, Edge

Standard half dollar specifications: about 30.6mm in diameter, 12.5 grams, 90% silver, reeded edge.

Mint Marks & Where to Find Them

This was a limited, single striking with a small original mintage. Given its scarcity and value, confirming the mint of origin and any mint mark should be done carefully alongside overall design and weight checks rather than relied on alone.

Telling It Apart From Similar Coins

The Captain Cook portrait and standing chief reverse are entirely unique to this issue and not shared with any other U.S. commemorative, so a correctly identified genuine example is unmistakable. The bigger challenge with this particular coin is distinguishing genuine strikes from counterfeits, given its high value relative to other classic commemoratives.

Judging Condition at a Glance

Because of its high original cost, most original buyers preserved their coins carefully, so well-struck, lightly handled examples are more typical of genuine survivors than heavily worn ones. Check Cook's portrait and the chief's feather cloak and spear for crisp, well-defined details consistent with the coin's low mintage and careful original handling.

Authenticity Red Flags

This is one of the more heavily counterfeited classic commemoratives because of its high value. Confirm weight (12.5 grams) and diameter (30.6mm) precisely, check for a magnetic reaction, and look closely for soft, mushy details in the chief's feather cloak and Cook's portrait, which are common weaknesses in cast counterfeits. Given the stakes involved with this particular issue, any example should be authenticated by a reputable professional grading service before you rely on it for identification or value.