Unidentified belt drive Garelli - what is it, and will it start?

I've been doing a bit of work on the Peugeot Vogue, but it's slow progress, so in the meantime I've got this oddity to show you. This is a Garelli with what appears to be an M48 or M56 Laura engine like a Batavus. Can you tell me what it is? It could be a Garelli Brianza, or it could be something else. Also I need engine side covers and some clutch parts, so are any of you lovely people breaking a Laura engine? Just for fun, let's try and start it with a drill