I don't think the cab fade makes much difference. It's so common with these games most people don't even notice. I do agree that it being a proto probably doesn't matter. Still, it's a really nice Congo HUO or not. Playfield looks perfect - no scoop wear and shooter lane looks perfect. Looks like volcano, plastics, and ramps in perfect shape as well. Hard to find a nice Congo so I would price this at the top end. With the current crazy market you could even get crazy money for it.