Thank you Vandoo!
As Fernando has astutely observed, this does appear to be a briquette blade, and this cutlass appears to be a pastiche, and extremely nicely done .
As CC has well noted there appears to be elements of the French M1833 cutlass and the brass bowl of the US M1860 might well be in use as well.
What is curious is that the pommel cap is not in the shape of the regular M1833 French, it is straight and angled , where the original is curved (Gilkerson , 1991, p.79, "Boarders Away".
The M1833 developed from the M1801 'sabre de bord' which was apparently japanned black rather than brass with the bowl guard, and this is typically mounted off the knuckleguard and not butted to the grip and pommel .
Since this bowl guard cutlass, the French M1801/33, was very popular it was used by virtually every European country's naval forces, so perhaps there may have been variants, but the anchor embellishment on the guard does not seem likely for a weapon for rack issue.