Green’s Dictionary of Slang

1. a share of money.

1893

P.H. Emerson Signor Lippo 12: We never count the denarley on the pitch, but put each man’s bottle into the sack just as it is till sharing time.

2. £2.

1989

in G. Tremlett Little Legs 192: bottle [...] the word can also mean £2 (i.e ‘a bottle’).