Wired reports: [edited]
A product of the F.W. Holler Company, the knife was manufactured in Solingen, Germany. John S. Holler decided to expand the company and created a demo piece to showcase the its products and craftsmanship. This object would hang in a window or be displayed in a case when the company traveled around to world expos.
Its handle is about 10 inches long, 6 inches wide and 4 inches deep. There’s two dagger blades, a serrated bread knife, a few pairs of shears, a couple of saw blades, a corkscrew, a lancet, button hooks, a cigar cutter, mechanical pens and pencils, and a piano tuning fork. Oh, and a .22-caliber pin-shot revolver. The tool weighs 9 pounds, and with everything fully extended, the object reaches about a foot in diameter.