Bajaj Vespa Serial Numbers

I have copied the followings from the Indian Scooter Owners Club members only page.
If I've been a naughty boy I will accept a slap on the wrist from the administrator!
I hope that those with an intrest in Indian built Vespa and Bajaj scooters will find it helpfull.
I have noticed a couple af small errors in the information but I personally think that it is the best summary of these scooters that is available anywhere.
Bajaj Model Identification
Serial numbers are prefix **C ( Chassis ) and **E ( Engine ) the first two digits is the model variant.
Vehicles produced at the Waluj Plant will have an extra 'W' mark for distinct indentification.
03 Variant - Bajaj 150 ( from April 1971-1973 )
The first model for bajaj once the piaggio agreement ended, they were the same as the Vespa 150 previously made under licence for the past 10 years. The horncast was wide and rounded like the vba/vba but had a hex horncast badge. The headset was a rounded type like the vba/vbb but raised volcano style mount with a round speedo. Very early production models were badged Vespa 150, eventually to display the bajaj 150 badge. Engine was 2port 3speed 150cc CBI (contact breaker ignition).
04 Variant - Bajaj Priya ( from 1975 build by Maharashtra Scooters Limited under licence by Bajaj Auto )
Priya name meaning = beloved one
Bajaj sold the Bajaj 150 toolings to Maharashtra Scooters Ltd who manufactured the Priya under licence from Bajaj. Had the new horncast style as seen on the early 1970s vespa models like sprint, super, probably already tooling in place just before the piaggio/bajaj agreement ended. This has shaper edges and tapered to the top to the horncast badge. The headset was similar to the vespa super with a 150mm headlamp with a volcano style speedo mount and round speedo as used in the bajaj150. Side panels were same as previous bajaj150 and Vespa150. The forks had 8' wheels but the stering lock was the same as the sprint, a push in type. 3port 150cc 3 speed engine.
05 Variant - Super / Super excel (Chassis nb. 05. / 145,45 cc) - 1976 Super Introduced
Early had 8' wheels, super headset with round raised speedo holder. Muguard and side panels same as vespa sprint/super. 05 variant engines early had 2 port CBI (super), from Aug95 3 port CBI (points) badged super, tail light was as on vespa super.
Later the model was called Super Excel, engines had 3 port EIS (Electronic), plastic headset top, large headlamp with chrome rim, destinctive T-Nose, vespas super panels with no indicators, Indicators were build into rear light. They had solid 8' wheels.
06 Variant - Bajaj Chetak (Chassis nb. 06. / 145,45 cc)
Chetak meaning = was the Horse of hindu king ' Chhatrapati Shivaji '
Badged Bajaj Chetak, with 10' wheels. Had a rally type headset with oval speedo large headlight
07 Variant - US Chetak ( approx 1980 )
This model was exported to the US in the early 1980's, unsure if it was made just for the US market as have seen none anywhere else worldwide the 07 veriant for the US has a large rear light. 2 types were made, square headlamp and rounded ( same as priya )
08 Variant - Bajaj 125 (Chassis nb. 08. / 123,39 cc)
Early models had 8' wheels, 150 Super style frame at the front and a curved No.Plate area at the back.The panels are 150 Super style and a 'Volcano'? headset with round speedo.The badge under the headset is hexagon shaped. Has same headset as the 04 and 05 variants. The chassis number had the variant and then serial number but no middle digits.
Later models were badged Super, they had T-Nose horncast with small square indicator lenses, rear indicators on side panels small square also, mudguard same as vespa super. They had solid 8' wheels.
10 Variant - Bajaj Cub Electronic (Chassis nb. 10. / 98,17 cc) Cub electronic from 1984 - 1987
Had a small 100cc engine, 8' solid wheels, 3 speed and round speedo. Early models had CB ignition, later examples were ES Electronic ignition both were 6v later models had AC indictors. 50/50 bore cylinder 10:1 compression ratio.
20 Variant - Bajaj Chetak Retro Chetak Classic Introduced from 1993 for the UK market
Basically the same as the standard Chetak, this version has more authentic 60's Vespa look thanks to Bajaj putting the indicators unobtrusively on the headset. There is even the option of a 50s style saddle seats. Enormous Glovebox. Ceased production in 2000. Price in 2000 was £1339 OTR
Tech Info : 125cc - 4 Speed - 2 Stroke - Electric Start ( Optional ) - Drum Brakes - Colours White/Blue/Green - 5.8 bhp Max Speed 55mph
23 Variant - Bajaj Chetak DE Classic
This model was exported only to Germany, unsure if it was made just for the German market as have seen none anywhere else worldwide
31 Variant - Bajaj Champion 4Stroke
35 Variant - Bajaj Classic SL With anti-div introduced from 1997
With electric start and anti-dive front fork set up which was an improvement from the older bajaj scooters which had 1960's fork design. Same engine design to the 1960s vespas, but had electric start and 12v electronic ignition thanks to the colaboration with Kawasaki. Most vespa parts will fit but has a twin stub exhause manifold which made exhaust options difficult unless you use a conversion stub. A must was to upgrade the main jet ( giving 6.5 bhp ) and to change the tyres. Because it had a very different crank so aftermarket tuning was difficult. But can be done with the use of a 6mm packing plate between the cylinder and casing which will allow the use of vespa type cylinder kits which use a 57mm stroke, see scootering edition 172 July 2000. There was talk of a 200cc version and autolube but the model was ceased in 2004 before these options became available. Price in 2000 was £1339 OTR
Tech Info : 125cc - 4 Speed - 2 Stroke - 3 port - Electric Start - Drum Brakes - 20/20 Spaco Carburettor - 54mm Stroke with 110mm conrod - Colours Black/White/Red/Blue/Green - 5.8 bhp Max Speed 55mph
?? variant - Bajaj Chetak/Bravo
Had a 5-port engine with Reed Valve delivering 8 HP of power with the highest torque of 1.35 kgm, making it the most powerful 2-stroke scooter in India. It had an advanced 5-port engine with Reed Valve Induction technology that results in superior combustion efficiencies. These include complete burning of fuel, therefore giving more power, more pick up, consistent mileage and low emissions.
No air groves in engine side panel, fixed LH panel with storage door. Headset with black fan speedo
Chetak had regular suspension wherease Chetak M ( metalic ) had antidive front suspension. Introduced a 7 sprung, 3 cork clutch plates from Dec 1999.
Ones build from march 2000 approx. Possibily had engine number starting CD
CLC & CLE ( electric start ) - Bajaj chetak Legend 145cc 4Stroke ( from 1998 )