[Ron Wood]

It is exremely unlikely that any tests after 1902 were carried out by the military in 7.65mm. The increased caliber of 9mm was standardized for military weapons and the ammunition was in the supply system. Going back to 7.65mm would have little merit.

The tests ca. 1902 were conducted with a small lot of 1900 pattern Lugers with commercial range serial numbers and a variety of barrel configurations. These are usually referred to as the "Danzig Test" series because of the Crown/D proof on the left receiver, although it is more likely that this is an inspectors mark rather than the Danzig crest.