Green’s Dictionary of Slang

mix-metal n.

[a silversmith’s function]

a silversmith.

[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.
[Aus]C. Crowe Aus. Sl. Dict. : Mix Metal, a silver smith.