Special Unit Z was a McAurthur-approved, branch-unit of the SOE (Special Operations Executive - the Commonwealth version of the OSS).
Accordingly the personnel were mostly Australian while the equipment was American.
They were active in Malaysia and vicinity plying the recon and demolition trade. Read more here.
A piece of kit issued them that was very non-American was their knuckle knife.
They were made in Australia and came with handles cast either in brass or zamack.
A very compact little knife;
Blade: 4", 8" OAL
$150. plus $5 shipping.
Zamack will be available if there's sufficient interest.
To order e-mail me.