A customer holds a Polish copy of Adolf Hitler’s ‘Mein Kampf’ at a bookstore in Wroclaw, Feb. 23, 2005. Photo: Reuters / Pierre Logwin PA / WS.

Police in Miami have unveiled a trove of Nazi memorabilia and antisemitic propaganda that was discovered in the home of a man currently on trial for arson.

A large knife emblazoned with a Nazi emblem, a giant flag with the logo of the SS stormtroopers, a mug featuring Adolf Hitler wearing a Santa Christmas hat and a copy of the Nazi leader’s book Mein Kampf were among the belongings of Walter Stolper, the elderly man who prosecutors say tried to burn down a Miami Beach condo last July in an effort to kill Jews.

The police photos of the items in Stolper’s home, as well as surveillance video of him wheeling gas in a shopping cart, will be key evidence against the defendant during a hearing next month, the Miami Herald reported.

Because they believe he was acting with prejudice toward Jewish people, prosecutors added the “hate-crime” enhancement, which means he faces stiffer penalties, including a possible life sentence, if convicted.

The 73-year-old, whose lawyer says he has been diagnosed with early onset of dementia, has so far been found competent to proceed to trial. He remains jailed.

Miami Beach police say they thwarted Stolper, who was being evicted from his unit, after he doused the condo with gasoline and was preparing to torch the building at 5601 Collins Avenue.

A witness told police Stolper said that he had bought plastic containers with gas and that he was “going to burn down the building with all the f—— Jews,” according to his arrest report. Miami Beach police saw Stolper in the parking garage moving two plastic containers using a shopping cart, and smelled gas coming from the items, police said. Gasoline had already been poured down from the 15th floor, authorities said.