Green’s Dictionary of Slang

duds n.2

[? bub n.4 ]

(N.Z.) the female breasts.

[NZ]G. Slatter Pagan Game (1969) 165: He kept trying to pat her rump and telling her he hadn’t seen such lovely duds outside a garage calendar.
[UK](con. 1930s) I. Agnew Loner 21: ‘Duds on her like this.’ And he made a slow, curving motion with his hands.
[NZ] McGill Reed Dict. of N.Z. Sl.