Green’s Dictionary of Slang

mozzle and brocha n.

[rhy. sl. = on the knocker under knocker n.1 , ult. Yid. mazel, good luck + brocha, a blessing]

a door-to-door salesman.

[UK]J. Franklyn Dict. of Rhy. Sl.
[UK]S.T. Kendall Up the Frog.
[UK]R. Puxley Cockney Rabbit.