I found these short video of comparing the sample console against the launch console (which had been modified as part of Cross CartDev system). Honestly I thought lost them for good but apparently it was among the unlabeled memory cards all along. The console housing appeared to be one of very early console case mold test injection. You could tell this by the complete lack of any detailed surface finishing as well as lettering you would find on the retail console case. Also the plastic and its thickness were somewhat different compared to the retail console case. This sample console had the label saying it belongs to the Sega internal division. However I couldn't find exactly which division the label was referring to. If anyone know about more in this please do let me know.