additional prefix

[mark]

I posted a request for info on vin numbers yesterday, thankyou for replies I had a look on vespa club of great britain and found this written in reply to a similar question (numbers prefixed ogm are not frame numbers but may be included as an additional means of identifiying the machine), the extra numbers that i mentioned start with ogm on my frame as well as the ones on the documents, has any dody else come across this before?

[breezer]

They are normally IGM, but they changed them at somepoint in time to include other letters. IGM is Italian Government Motori or summat

Ignore it - all you should be concerned about are the VLB1M or VLB1T or whatever.

If you have to get the frame regged in the UK though they will want to see the IGM number