Unique Silver Ghost known as 'The Corgi' after being copied by toy maker
Price driven sky-high as two enthusiasts duelled in £100,000 increments
Hammer fell at £4.7m to anonymous buyer - more than twice £2m estimate
Six-cylinder, 7.3l vehicle in immaculate condition with perfect provenance
Originally bought by a man from South Croydon in 1912 for around £1,000
Put up for sale at Bonhams after latest owner was killed in a road accident

Read more: http://www.dailymail.co.uk/news/article ... z3bpEFxD5V