The Sega Saturn promo was published by Eidos in Europe in 1996, without catalog number. The sample disc is identical to the retail disc, only there is no label printed on it. My copy came from a Sega Germany employee, and came with a retail cover cut to fit inside a standard jewelcase. Others sent out as promos came in white envelopes with title stickers.
1. Front of cut cardboard
2. Back of cut cardboard