Sword maker of combination weapon

[Marcus]

The pistol and sword elements of this weapon were almost certainly made separately, with the sword maker perhaps offering a pistol as an accessory to a high quality sword. The pistol is signed “Hock-I-Mayntz”. So the pistol maker was likely Johann Anton Hock working in the city of Mainz.

Can anyone help identify the sword maker based on his marks: three stars and a crescent? Presumably he was also German.

I would also welcome comments on the composition of the grip. It does not look like there is wood grain, so my guess is processed horn of some sort.