It was pre-First World War and customised with the colours and logo of the London North Western Railway, the 1856-1922 line which became part of LMS.
“Usually these locomotives were painted by the German factory in generic colours,” said Kegan Harrison, toys specialist at the Leyburn rooms.
“This was a very rare example as it carried the colours of a British railway line, the LNWR, which certainly spiked the interest of collectors.”
A bidding battle was won by a Continental buyer at £9000.