Two Mauser HSc pistols. The lower example is called the "three-line" variation due to the markings rolled onto the left of the slide. Both were militarily accepted as evidenced by the acceptance mark at the lower end of the triggerguard.
A very interesting walking cane that is actually a single shot gauge shotgun. The trigger is folds away so it is hidden and looks completely like a harmless cane. It’s of Belgian origin and design, somewhat old in design.