Just picked up with Machine..

[GameXGame]

1973 Sanyo Bussan vintage pachinko machine
Missing a lot of chrome frame screws
Missing Key cylinder faceplate
Seesaw (inside the round window) needs to be reset to the Up position by pushing up on the rod located underneath the seesaw
Stop-play rod located to the left of the ball jam needs to be repositioned (Carefully) on the right-hand side of that white shark fin (AKA Rear lever for the ball loader)

The white ball track near the center located behind the machine has 2 legs, use your fingers or a screwdriver and swing those legs to the right and hold them there; that will drop the jackpot shovel down with all the jammed balls; next just lift up the paperclip-looking rod to release those jammed balls. If they stay lodged, just lift the white track legs out of the way while lifting that jackpot shovel that is holding the stack of jammed balls, and allow it to drop and dislodge the bottom ball... or use an earth magnet.

If you need more help, the guys here are more than happy to help you!