Green’s Dictionary of Slang

cakey-pannum fencer n.

[SE cake + pannam n. (1) + -fencer sfx]

a street-seller of pastries.

[Aus]Bell’s Life in Sydney 26 Feb. 1/4: I ogled um vorkin ven tho Ka-ke Pannum cut out a swell.
[UK]Hotten Dict. of Modern Sl. etc.
[Aus]Melbourne Punch ‘City Police Court’ 3 Oct. 234/1: Prisoner. You see she was on the mooch, and happening to nim a prop from a swell’s fancy kingsman, a cakey-pannum-fencer, as ought to know better, peached on her.
[UK]Sl. Dict.