I found this auction the other day ..
http://cgi.ebay.com/ws/eBayISAPI.dll...ayphotohosting
I am quite convinced this machine is pirated, as I've seen identical systems in Russia and Turkey that were, and used this exact design, all in different boxes. I even saw one with the wrong CPU speed. All had the big 2 in the logo, a toggle swtich and not a push button for Power, an odd color for the Reset and Start buttons, et cetera. I also don't know of any MDs that came with Sonic 3. Any info would be schweet.
If you'd like to see other versions of this I've seen, I threw together a page here ..
http://www.epicgaming.net/pirate_md_hw.php