In the seventh picture (and others) is a CZ Pistole Model 27. An inexpensive but fine little pistol!
My dad flew B-17s and couldn’t get his hands on souvenirs like Lugers. He had to settle for some knives and a couple CZ27s. One had cracked bakelite grips. The other is stamped with a Luftwaffe emblem.
Maybe they can dig me up some replacement grips!
https://www.gunpartscorp.com/gun-manufacturer/cz/auto-pistols-cz/27-cz?page=2
Part key no. 23. You have two choices: New production hard rubber at $64, (Plastic at $14 but are out of stock,) and checkered walnut at $42.