So I came across this: https://blog.goo.ne.jp/nazox2016/e/83b6097c7dd4d40c7a54522900035693 This is a "Nedan-hyō" (値段表) or "price list"of things our favourite company was selling in 1966. The resolution's a bit too low for a lot of it to be useful, but we know comparitively little about the 1950s/60s/70s so everything's a plus. When this was produced, Sega's core business was importing things from the US for distribution in Japan. So actually most of this catalogue is Rock-Ola, Bally and Williams stuff with a Sega badge presumably slapped on somewhere. There are undocumented Sega arcade games though, that I can't prove exist(ed) - "Jungle Gun" (ジャングルガン) - "Western Gun" (ウエスタンガン) (all that's known about Space Ace is that a dusty cabinet existed once) But what I'm most confused about is that last page, where there seems to be talk of model cars and railways. There's a Ford GT there. Were Sega selling model Ford GTs? That's an interesting thing.