IDENTIFICACION

[Dmitry]

Originally Posted by corrado26

If you look at the photo, there is behind de 2g NGP an M/71, so this was certainly not a nitro based powder but always still black powder. First nitro cartidges in Germany came in 1888 with the infantry rifle M/88.

What does the Neues stand for in this context, if it's not smokeless, but black powder, as you wrote? Was it a new standard for the black powder? Continuing onto the HH lot itself, if this revolver was designated as the Model 1871, doesn't it mean that it was intended for official state business? Also, if the HH auction description is to be believed, then by the time this were used for some kind of war games ca.1900, it was already about 30 years old.
One idea I have about this HH revolver is that it was used in a clock, and would fire a round on the hour mark. 12 chambers make sense in that context.
2 gr. meaning grains, not grams, briefly crossed my mind also, but I doubt that Germans measured the weight of their gunpowder in English terms.