OEC Duplex 1931

1931 OEC Duplex with JAP 500cc engine. OEC (Osborn Engineering Company) motorcycles were built in Great Britain from 1901 to 1954.

1926 press advert of OEC motorcycle with Duplex steering system

"Frederick Osborn of the Osborn Engineering Company began manufacture of motorcycles in 1901 using Minerva and MMC engines. After WWI, his son John Osborn resumed production of OEC-Blackburne machines, later shortened to OEC. During the marque's long lifetime models were produced with large capacity V-twin JAP, Blackbourne and Matchless engines, and with Villiers two-stroke engines after WW2. OEC Motorcycles were made in Portsmouth and Gosport." (from cybermotorcycle.com)