Motorcycle Compendium
Opel - The German carmaker also built motorcycles
OD - German bike built by Willi Ostner
OEC - manufactured in England by the Osborn Engineering Company.
OK - Also known as the OK-Supreme, built in Britain at the turn of the century
Oz - American motorbikes
OK-Supreme - see OK
Olympic - mahines built in England by Frank Parkyn
Olympus - Japanese motorbikes
Omega - motorcycles built in England in the Hillfields factory in 1909.
Orbit - motorcycles built in Britain in 1924 by A.J. Dorsett
Oakes - American motorcycles
Oscar - a prototype small capacity motorcycle that never went into production, England
Orionette - German bikes built in 1925
Orle - Polish motorcycles built in 1934
Oscar - Italian motorcycles
Okay - motorwheels for bicycles built in America
Ossa - Spanish motorcycles built between 1951 - 1985
Over - Japanese machines
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