Here's a mug straight from Joypolis! It was bought there in 2000, so the Sonic Adventure 1 theme makes sense. One side has that odd pose 'circle Sonic', specific to SA1, in a diamond shape. The other side is checkered in navy blue, with cut-outs & line art of standing & circle pose Sonic in each checker. The bottom has either a title or a signature of some kind. The orange square has "GS AE" (contains letters that can spell SEGA when re-ordered, a Japanese stamp reading top to bottom, right to left) & there's clearly a word or 3 seen there in the close up. It's actually "Sonic the Hedgehog" but written in Hiragana rather than Katakana. (Katakana is common, Hiragana less so, for his name in logos & etc.) This mug also has a few differences, there's like a rim or a ridge under it so the very edge doesn't sit on the table. It's also taller/thinner & smaller than a standard mug. Info by Banana & Pureboy.