TIF, I truly LOVE all your 'nautical' posts...but I feel a Bing-Force coming on me ----- "GIVE ME THAT AR DISHEKEL NOW"!!! Sorry, I'm better now---That coin is absolutely astounding!!
They're quite close but I don't think the obverse dies match. The chin-neck angles and bust truncations are different for the left-facing portraits. It is possible that centering, coin wear, and die age account for the differences.