The rare drop-top goes under the hammer next month.
Photo: Robin Adams/RM Auctions

Photo: Robin Adams/RM Auctions

You're going to need your sunglasses for this one. RM Auctions will be selling an incredibly rare BMW 507 Roadster Series I in a striking sea green. The car has had four owners with the latest owner having owned and maintained the car for 51 years. 

The car began its life with a black exterior and then quickly was repainted in sea green and has remained in that color ever since. The 507 is one of 252 cars BMW produced and this one has only seen 73,000 km of use. It also features the original 145-hp V8 engine with dual-carburetors and a four-speed manual transmission. You can bet this will soar past a million bucks when it goes on sale next month in Monterey. 

rmauctions.com

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