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European Motorcycles

Classic Motorcycle Numbers

Motorcycle Serial Numbers & VIN Numbers

Motorcycle Serial Number Locations
These vary considerably from marque to marque

Engine Numbers
Check these locations:
Below the barrel stamped into the crankcase. On the front of the engine stamped either side of the crankcase join. Below the clutch / transmission area. Rear of cases below carburettor area.

Frame Numbers.
By far the most common location is on the steering head. It may also be found on one of the rear downtubes or on the front downtubes.
Other locations include: top tube below fuel tank; lower frame rails; swing-arm pivot area.
Motobecane Mobylette 1968: Forward of the rear wheel axle on left side.
Matchless pre-1958: Directly below saddle on upper frame rail joint.
Matchless 1958-59: rear of front downtube.
Matchless 1960-67: right downtube below headstock.
James
Rigid frames:  usually stamped on the lug beneath the saddle on LHS
Plunger frames: saddle lug (same as rigid), or on the steering head, LHS
Swing arm frames: stamped into steering head and/or into a steel ID plate pop-rivetted onto the steering head.



Aermacchi VIN numbers

AMC AJS/Matchless from c1935
Engine numbers usually start with the year of production, followed by model designation, and completed with the production number of the motorcycle.
(Source - Wikipedia)

Ariel Serial Numbers
redhunter.com/ariel/aomcc_prefix.htm

BMW Engine & Frame Numbers
Post-1969 BMW 650 numbers
BMW Motorcycle Serial Numbers 1923 to 1969 at benchmarkworks.com
BMW motorcycle model, year and VIN errors

BSA Serial Numbers
BSA Numbering System

BSA Frame Numbers at NSW BSA Club
BSA Frame Numbers

BSA at sunnymeadcycles (PDF)
http://www.sunnymeadcycles.com/files/BSA_ID.pdf

BSA Numbers at moto-anglaises.com
motos-anglaises.com

BSA C15 Serial Numbers
classicmotorcycles.org.uk/c15/c15_serial_numbers.htm

DKW

DKW Vehicle Identification

http://dkw-geyer.com/DKW-Geyer/e/technik/ftp.htm

DKW NZ350 Serial Numbers

http://www.dkw-nz.net/cms/upload/img_pdf_downloads/database.pdf

Francis-Barnett
Frame & Engine Numbers

Lambretta
http://www.scooterhelp.com/serial/serial.numbers.html

Maico
Maico Numbers at Maico Madness
Maico Code Definitions

Montesa
Montesa Numbers

Norton
Norton Serial Numbers at Bikelinks
http://www.sunnymeadcycles.com/files/Norton_ID.pdf
http://www.bmh.com.au/norton/
Norton Engine Numbers 1945-1975

NSU
NSU Max - (1)

Parilla
http://www.nornet.on.ca/~tharris/parilla/models-1.html
http://www.nornet.on.ca/~tharris/parilla/models-3.html

Penton
Penton Identification - KTM, Sachs & Puch engine information
pentonmotorcycles.com/

Peugeot
http://www.petochonsdulion.net/Afficher_Noserie.html
Also Automoto, Grifon and Meteore

Sachs
See also under Penton
Sachs 98ccm Modell 1932

Royal Enfield

Royal Enfield Serial Numbers at Bikelinks

Triumph
Triumph Serial Numbers at Bikelinks 

Triumph Engine & Frame Numbers 1950-1988 at britishspares.com

Velocettte
Velocette LE Engine & Frame Numbers

Velosolex
Velosolex engine serial numbers

Vespa Identification
garnersclassicscooters.com/Vespa-ID.htm
scooterhelp.com/serial/serial.numbers.html
This page includes information on Vespas made under licence by Douglas, ACMA in France, and Motovespa in Spain, along with those marketed in the United States by Sears under the Allstate marque.

Villiers
Villiers Engine Numbers
http://www.hulsmannmotor.nl/Villiers_Motornummers.html

Classic Motorcycle Fibreglass
Classic Motorcycle Fibreglass
Tanks, seats, guards and fairings for classic bikes, cafe racers and post-classic motorcycles.