At the time of the attempted sale on eBay, four years ago, there was a minor stink going around about it's authenticity. Some noted that the factory GP racer would have an alloy tank whereas this specimen had a fiberglass tank. The front brakes, while duly noted as leading shoe drum brakes, were not the same as the factory GP racer's 4LS. (And some said the 1974 factory GP racer had disc brakes up front. I dunno.) The brakes on the pictured bike are from a Benelli 650 Tornado. The seller, when questioned about the history of the bike, responded vaguely:
Q; Can you provide a 'history' for this bike? Dave Jan-17-10
A: The bike sat in a barn in Minnesota for 30 years until Kent aquired the bike and restored it to museum quailty. Thanks for your interest!
Q: does this machine have any history....... race or otherwise?thanks Jan-17-10
A: The bike sat in a barn in Minnesota for 30 years until Kent aquired the bike and restored it to museum quailty. Thanks for your interest!
Doesn't really say too much about it's racing provenance does it?
Finally, on the builder's (Kent Riches) own website:
http://airtech-streamlining.com/benelli/benelliquattro500.htm
he depicts the very same bike and notes:
The 500 Quattro on your left is another Kent Riches restoration. The original was in ways a parts bin special so we don't feel shy about fitting a Honda CR750 fairing and Norton Commando Production Racer tank to it.