Originally Posted by
recorderdude
The one without the license screen is a non-TMSS genesis model 1. This is the first model released with altered beast at launch. To a genesis junkie, this model is usually cited as the most preferred as it's made with the best-quality components (often cited as having the best sound output as well) and doesn't lock out early unlicensed games like "Zany Golf" and "Onslaught". I'd hang onto it in the chance that you find someone interested in looking for this model, and use it yourself in the meantime. To a normal buyer, no, it won't fetch much more, but to someone looking for one it just may.