Robbers pretending to be interested in selling a Japanese sword to a weapons collector pulled a gun on the man, bound him with duct tape and stole about 60 antique military handguns and daggers, police say.
The victim is "an avid collector of antique military memorabilia," police said Thursday in a news release.
Paul Zaya, 59, told police that the men met him at his home Wednesday evening to discuss sale of the sword, said Canton Township police Sgt. Steve Miller.
Zaya was examining the sword with two of the men when a third man entered and the three attacked him, police said. The robbers, at least one armed with a handgun, made off with Zaya's collection, police said.
The collection included about 30 handguns and about 30 daggers. Zaya freed himself and called police.
"He was fairly shook up," Miller told The Detroit News. "He is more mad that he lost his collection. He had been collecting for over 40 years."
The home is in Wayne County, about 20 miles west of Detroit.