Green’s Dictionary of Slang

(W.I.) ninepence (post-1969 value, five cents).

1858		in Trinidad Sentinel 8 Apr. n.p.: Awee free man lek a wee so no blige fou work two bit a day.
1894		T. Banbury Jamaica Superstitions 41: Two bit nebba braggin, as one fipenny.
1910		Anderson & Cundall Jamaica Proverbs and Sayings 4: Two bit neber braggin’ as one fippenny.