Green’s Dictionary of Slang

stang n.

[? sting n. (3)]

(US und.) a source of loot.

[US]H. Williamson Hustler 161: He wanted to shake me down too, but I wouldn’t stand for it! [...] The law is that whoever finds the stang [f.n.] gets the majority of it [f.n. Stang—prospective loot].