This 9 lbs, 1-foot-diameter “multi tool” was designed as a calling card by the F.W. Holler Company of Solingen, Germany, who were seeking to make a name for German knife manufacturers in Solingen (who had a centuries-long reputation for knife making) among the emerging market for Swiss Army Knives. It has 100 “blades,” including a .22 revolver. And a straight razor.

It’s hard to tell by photos alone, but this multi-tool is much larger than your typical Swiss Army knife. Its handle is about 10 inches long, 6 inches wide and 4 inches deep, which makes a lot of sense when you realize how many different types of blades have to fit into it. To start, there’s two dagger blades, a serrated bread knife, a few pairs of shears, a couple of saw blades, a corkscrew, a lancet (for boils?), button hooks, a cigar cutter (hey, why not!), mechanical pens and pencils, and even a piano tuning fork (whew). Really, the only thing the knife is missing is a bottle opener, since the bottle cap we know today wasn’t invented until 1892.

The tool weighs in at around 9 pounds, and with everything fully extended, the object reaches about a foot in diameter, which makes this much more a suitcase knife than a pocket knife. Miller says it takes about 25 minutes to fully open the gadget, and even when you take your time, it’s a dangerous task. “I’ve cut myself on that darn straight razor,” he says. The Smithsonian acquired the knife in 1986 after it was donated by James F. Parker. While alive, Parker was well known in knife collection circles—he owned his own cutlery company and served as the first president of the Knife Collectors Association. Miller says the first time he saw the object he couldn’t believe it was real. “I was particularly impressed with the revolver,” he recalls. “If you bring this knife to a gunfight, you’re OK.”