Quote Originally Posted by Filterlab View Post
Surely it's a homage of the Hamilton Khaki Field? Or is that based upon the Benrus?

As Sinnlover said above various specs for US military watches were issued and both Benrus and Hamilton made similar versions.

I'm not an expert on US military watches, but from reading into the history of them, MIL-W-3818B was the spec issued in 1962 which is what the Benrus DTU-2A/P was made to meet. Other companies (not including Hamilton) also tendered but only the Benrus was considered to meet the spec. MIL-W-46374 was the updated spec issued in 1964, and the A version was released in 1968 with Hamilton producing metal cased versions.