Scooterotica

A mate of mine has been given an engine from his neighbour, apparently the previous owner of the garage (15 - 30 years ago!) used to race Vespas and sidecars, is there a way of telling from the engine number, what it was originally from?
There is no visable prefix code just numbers 10110610.
Thanks

difficult without the prefix

can you post a photo or have a look at

http://scooterhelp.com/tips/engine/engine.main.html

it should give you a starting point