Metro

Forgetful sellers’ surprise housewarming ‘gifts’

A classy seller of a posh apartment may leave a bottle of champagne for the new owners.

But some New Yorkers have left behind everything from cash and diamonds to their pets.

Dolly Lenz, a broker with Prudential Douglas Elliman, once represented a client who bought a Trump Towers apartment now valued at $15 million.

When walking through it with the buyer, she discovered a bag filled with hundred-dollar bills — about 600 of them — stuffed under the mattress.

The fat-cat seller was apparently too rich to notice they were missing.

And speaking of cats, while showing another expensive pad, Lenz spotted a newborn kitten.

“I think the seller scooped up the litter but forgot one,” she said.

She cared for it for three days until she tracked down the owner and delivered the little furball.

Jaf Glazier, of Conquest Advisors, also had a seller who forgot his pet — a snake.

“The snake’s name was Shamequa. It was very cute,” Glazier said.

Another time, a seller had installed a fake wall that hid a safe.

Inside was a diamond necklace.

“It looked like the seller had cleared out the safe but forgotten the necklace,” said Glazier, adding that it turned out to be a family heirloom.

Also left behind in expensive apartments were:

* Rock lyrics and rockers’ phone numbers.

When Courtney Love sold her SoHo loft, she left scrawlings on a kitchen wall, said Prudential broker Wilbur Gonzalez. The writing included “pretty amazing lyrics — and phone numbers of people like Elton John and Michael Jackson!” he said.

* A World War II Nazi gun.

The apartment owner’s grandfather had seized it during the war. “It was left in a secret spot under the stairs,” Glazier said.

jennifer.keil@nypost.com