Presenting- a crystal wine goblet!
It's Sonic Stemware! This crystal goblet was released in limited amounts in Japan for Sonic's 10th Anniversary. As you can see, the crystal is etched with the 10th anniversary symbol. The glass is in a gold foil embellished white box, lined with blue satin! Perfect for display. It even has a certificate of authenticity. Adding to the value of this piece, are official Sonic Team signatures, including Yuji Naka, with dates.
Most fans have not even heard such an item exists (and there mustn't be very many) it's sure to be the jewel of any collection...if you can find it.