Offizieller Kommentar
Here's what I've been told...
The warranty period in UK for specific products (including the SP-16) is 2 years from the date of purchase. The original purchase receipt is important for the 2nd buyer as he could then use it as proof of purchase date and the warranty would be valid in Italy as these countries are under EU regulations.
So yes, if you can get the receipt, the new purchaser would be covered until the end of the 2 years.