The car will cross the block at RM Sotheby's Monaco 2018 sale in May along with several other choice BMWs and other marques.

It appears to be in original condition and wears the optional aerodynamics kit that includes a front air dam, short roof spoiler, and a wild-looking three-piece rear wing.

The interior looks clean and features original black and red Scheel sport seats and the original three-spoke steering wheel. Also, to sweeten the deal, the engine numbers match and there's just 39,072 kms (roughly 24,278 miles) on the clock.

Records indicate that it was built in the summer of 1973. The car spent much of its early days in Spain, but was not registered until 1975 by the first owner.

Ten years later it moved back to Germany and remained there until 2007. It was sold and returned to Spain once again and reportedly received a complete service in Barcelona by an expert racing mechanic. The auction house states that the auto was purchased by its current owner in 2013.

RM Sotheby's estimates this rare bewinged bimmer will sell for 290,000-390,000 euros (roughly $356,000-479,000 U.S. ), so if you're interested, you'd better be as cash-flush as Bruce Wayne.

Source: RM Sotheby's

Photos courtesy of RM Sotheby's.