Hi. I bought a house and attached to the wall was a Tiger Mask pachinko game (it says NYK and Ace Active Amusemen). It seems to be fully operational, and even has a nice wooden case. I honestly don't know what to do with it? Sell it? Keep it? Throw it out?

Not trying to break the rules here and sell it, just curious if anyone knows things like:

1. How old this may be? I don't see a date, and I can't find the exact model anywhere
2. Is this rare? Valuable?
3. If i do keep it, is there a way to adjust the volume (I looked through other threads, but there is no resistor knob on this one)

Any info is appreciated, thanks!pach1.jpgpach2.jpg