New York, United States | Personal items belonging to the late Ronald Reagan and his wife Nancy head to the auction block to raise funds for the popular US leader's presidential foundation.

The hundreds of items that Christie's auction house will put to the highest bidder in New York include the Republican president's cowboy boots and a signed chunk of the Berlin Wall, as well as more mundane items like furniture and porcelain sets.

Other items include a lot of five wooden walking canes (estimated price: $300-$500), porcelain lamps ($1,500-$2,500), a Chinese screen, embroidered cushions, enameled boxes, and a painting signed by singer Frank Sinatra.

The Berlin Wall piece, measuring 63 centimeters (23 inches) long, is signed by the former president and valued between $10,000 and $20,000.

The boots, which carry the seal of the president of the United States, are estimated to sell for $10,000 to $20,000. More affordable are pencil doodles on White House stationary and signed by Reagan, valued at $2,500 to $3,500.

A marine chronometer timepiece made by US jeweler Tiffany and given by Sinatra and his wife Barbara to the Reagans for the president's 1981 inauguration is estimated to fetch $5,000 to $10,000.

Nancy Reagan's jewelry headed for the auction block includes an octagonal diamond, sapphire and ruby ring in the design of the US flag that she wore on Independence Day 1986.

The sale of the 700 lots is expected to raise more than $2 million.

Besides the two-day public sale, some 260 lots will be sold online.

Reagan, who was in office from 1981 to 1989, is an icon of US conservatives. He died in 2004 at the age of 93 after a ten-year struggle with Alzheimers.

Former first lady Nancy Reagan died in March at 94.