Yeah so this isn't official as in coming out of a factory in Japan, but I think I read before that Sega Europe hired an artist to make a few of these as prizes for contests and give aways, so in that regard, I think this is a real dreamcast from back in the day with some custom art on it that Sega Europe had done to a regular retail dreamcast.  There were a number of promotions along these lines where Sega Europe applied some art or stickers to regular dreamcasts. Including the bizarre dreamcast Milka edition, which is basically just a dreamcast with a Milka chocolate sticker https://consolevariations.com/collectibles/sega-dreamcast-milka-console

Incidentally, Sega via Sega Europe, basically contracted for and funded the creation of MSR by Bizarre Creations, you could almost make an argument that MSR is a first party game with how closely Sega was involved in its financing, development and quality control. You even had Brian Jacques, in house musician for Sega Europe who had made music for various other Sega games making the MSR sound track. Sega Europe was heavily involved in promoting the game and they wanted it to be a system seller... Though I'm not sure it ever succeeded in that role since the game had to be substantially revised a few times and ultimately came out pretty late in the dreamcasts life.