There used to a website and forum for the Tecmo guys and they would do updated rosters every year. The carts they started making I was told in 2010 and lasted until I think about 2018? I'd have to check my shelf. They were usually really small runs up to I think 2015 and pretty niche, so if I see originals I try to pick them up. For a couple years, quality improved and they were doing carts and boxes, not sure about manuals, I don't think those were included, that's where you get the Gold version, which I think was probably somewhere around 2017-2018.