A variety of large and small motorcycles will go up for auction at Bonhams sale of An Important European Collection of Pioneer, Vintage and Collectors' Motorcycles at the RAF Museum in Hendon, UK, on February 27.
The varied and unusual collection features all sorts of collectible motorcycles, ranging from a three seater Böhmerland to a penny farthing.
Among the starring - and most unique - lots from bygone eras is the 1937 Böhmerland 603cc Langtouren.
This three seater machine is one of Czechoslovakia's most celebrated motorcycles. It was manufactured from 1925 until 1939.
Designed by Albin Liebisch, the Böhmerland was remarkably unconventional with a lengthy, duplex-loop tubular frame and, for the first time on a motorcycle, cast-alloy wheels.
This legendary machine will appear before collectors and enthusiasts estimated at £35,000-45,000.
"The collection is extremely broad... with estimates ranging from £600 up to £150,000," said Ben Walker, Head of the Motorcycles Department at Bonhams.
Our client has concentrated on many different time periods and genres of motorcycle and has managed to assemble a magnificent array of machines.
"It is certainly one of the very best collections to be offered on the open market in recent times."
Bonhams will be hoping to continue the success it achieved with the sale of the largest single manufacturer bike collection, last November.
The collection of William Neutken, the greatest assortment of vintage BMW motorcycles in the world, was lead by a 1924 BMW 493cc R32, which raced to an astonishing €109,250.