On Nov. 5 and 6, Mecum Auctions will host a special one-time, no-reserve auction of Bob McDorman's personal collection of 150 cars and Chevrolet memorabilia at the McDorman dealership in Canal Winchester.

On Nov. 5 and 6, Mecum Auctions will host a special one-time, no-reserve auction of Bob McDorman's personal collection of 150 cars and Chevrolet memorabilia at the McDorman dealership in Canal Winchester.

According to the auction company, the sale will include the most complete collection of Corvettes in the world, featuring one Corvette from every model year from 1953 to the present.

McDorman called it the "rarest of the rare."

"This is Bob's final 150 cars," Mecum marketing director Sam Murtaugh said. "Bob has had quite an enormous collection for as far back as I can remember. Slowly, over time, he has sold bits and pieces of his collection."

In September 2009, McDorman held a no-reserve auction of his $2.7-million private collection of more than 1,000 vintage signs, parts and auto collectibles. A no-reserve auction means that there is no minimum price on the items.

McDorman said now is a good time to sell his collection of cars because finances are tight. He said a lot of car dealers are hurting with the downtown in the economy.

"We are doing a lot better than we did last year," he said, but added that sales are a lot less than they used to be.

Included in the collection are 89 Corvettes, McDorman said. He said every car is his favorite.

"I hate like a passion getting rid of them," he said. "I could save $22,000 a month in interest money. There are tough times right now."

McDorman said with the bad economy, the Corvette market suffered a loss of sales. In 2009, General Motors only sold 13,000 Corvettes compared to 52,000 in previous years. For comparison, GM sold 16,000 Corvettes in 1961, he said.

McDorman said it is very difficult for him to auction his collection because he spent so many years putting it together.

"I put the rarest of the rare together," he said.

Another reason for selling the collection, McDorman said, is a lack of time to drive the cars. The only time he sees the whole collection is during a Corvette show in September. The vehicles are kept in a building and don't gather much dust, he said.

McDorman, who has been with Chevrolet for 45 years, said he will probably keep eight to 10 cars not listed in the sale and will try to drive at least one a week.

Murtaugh said McDorman has cars dating from 1915 to the present.

"He has the world's most complete Corvette collection a Corvette for every year since the beginning of production," he said.

The collection includes Corvettes driven by Johnny Carson and George Straight and a Camaro owned by Dolly Parton. McDorman even owns a prototype of a car that was never sold to the public, Murtaugh said.

Among the Corvettes are Bunkie Knudsen's 1963 Chevrolet Corvette Stingray and the Pink Pearl - a specially built 1964 Corvette Stingray ordered by Knudsen for his wife, Florence, Murtaugh said.

Mecum will also auction a 1938 Chevrolet Cabriolet designed by GM of France during an overseas styling exercise. Of the two prototype Chevrolet vehicles designed, this car - featuring unique European influences - is the only survivor, Murtaugh said.

The auction also will include 100 neon signs and memorabilia, Murtaugh said. Participants will be able to find items in a variety of price ranges, he said.

"The cheapest item you will see on the memorabilia side (will be) as low as $25," he said. "The cars could go as high as $1-million."

Mecum has been getting inquiries about the auction from across the globe since the company announced the auction in August, Murtaugh said.

"We are a collector car auction company," he said. "That is where we focus collectors of autos, vintage wooden boots, cars and motorcycles on the collector side."

Those interested in purchasing an item must register to bid. First-time bidders will be charged a $100 one-time bid fee. There is no fee to look at the inventory. Murtaugh said bidders who pre-register will receive complimentary auction catalog which retails for $25.