World's oldest-surviving Porsche set to sell for $20m at auction

How much would you pay to own the world's oldest Porsche?

Auto valuation experts believe some enthusiastic soul with deep pockets will fork over $20 million for the antique collectible known as the Type 64 #3.

If it happens, it would be the most expensive Porsche purchase in world history, the Daily Mail reports, citing Road and Track.

Porsche engineer and founder Ferdinand Porsche's son, Ferry Porsche, originally came up with the idea for the Type 64 in 1939, but completed its design in 1940, according to Road and Track.  

 The vehicle's rounded features mirror the popular Volkswagen beetle of the same era. However the Type 64 was supposed to help its creator win a 1,500 kilometer race between Berlin and Rome in 1939.   

The invasion of Poland by Nazi Germany in September of that year prevented the race from ever occurring. 

'Without the Type 64, there would be no Porsche 356, no 550, no 911,' RM Sotheby's car expert Marcus Görig said in a statement.