“Military” black dial.
Fun fact:
Some have 1960 on the back and others have 1970. (I have the 1970 … as it’s the year I was born)
When first launched GP had 1960 engraved on the back … apparently a homage to some models from GP in 1960.
Subsequently, GP felt that it was a mistake, and it should have been a homage to models from the 1970s.
Hence, the reason for some having 1960 (the mistake) vs others having 1970.
Wear it in good health Riddler☀️