Always best to either go yourself and get them...if theyve not posted them yet I would call them and say you'll go over and collect, or ask the scooter firm (if in Geneva)  to get them for you.....

10 days does sound rather a long time though, and if you want to guarantee picking up the bike on Sat... even the cost of a taxi there and back is probably less heart wrenching than seeing the postman pass you by for 10 days...

Thanks Charlie - I was actually in there this afternoon for that very reason and they told me the plates had already left. I bought the bike from a dealer in Aargau, so I thought this would be easier. How naive!

Charlie is right, i just gone to there office in Carouge and they also gave me a new plate, when my old motorbike plaque was either stolen or came off. Its cost me like CHF 95- for a new one.