Vintage car used by Britain's Winston Churchill being auctioned off eBay

Car saler Sabri Carkan and his wife Saliha stand behind a Daimler DB 18 Drophead Coupe in their showroom in Enger, Germany, Monday, April 29, 2013. Experts believe the vintage Daimler DB 18 Drophead Coupe is the only one of its kind left. Only eight of these cars were produced since 1939. The rare car was used by Britain’s wartime leader Winston Churchill between 1944 and 1949 is being sold on auction site eBay. (AP Photo/Martin Meissner) (The Associated Press)

Car saler Sabri Carkan and his wife Saliha is in a Daimler DB 18 Drophead Coupe in their showroom in Enger, Germany, Monday, April 29, 2013, Experts believe the vintage Daimler DB 18 Drophead Coupe is the only one of its kind left. Only eight of these cars were produced since 1939. The rare car was used by Britain’s wartime leader Winston Churchill between 1944 and 1949 is being sold on auction site eBay (AP Photo/Martin Meissner) (The Associated Press)

Car saler Sabri Carkan and his wife Saliha is in a Daimler DB 18 Drophead Coupe in their showroom in Enger, Germany, Monday, April 29, 2013, Experts believe the vintage Daimler DB 18 Drophead Coupe is the only one of its kind left. Only eight of these cars were produced since 1939. The rare car was used by Britain’s wartime leader Winston Churchill between 1944 and 1949 is being sold on auction site eBay (AP Photo/Martin Meissner) (The Associated Press)

A rare car once used by Britain's wartime leader Winston Churchill is being sold on the auction site eBay.

Experts believe the vintage Daimler DB 18 Drophead Coupe is the only one of its kind left.

Germany-based seller Sabri Cakar says the U.K. prime minister used the car between 1944 and 1949.

Bids in the auction, which ends Monday shortly after 7 p.m. (1700 GMT), already top 470,000 euros ($616,000).

Cakar said original registration documents confirm the authenticity of the silver and black coupe.

The authenticity of the car was previously checked by British auction house Historics at Brooklands, which tried but failed to sell the vehicle earlier.

Company auction director, Edward Bridger-Stille, said it was "unusual" to sell such a car to the general public on eBay.