A fellow pinsider by the name of Pinballmike217 found Capcom Kingpin #8:
"Not much to tell. It was owned by a collector who was very private. He bought in the late 90's and tucked it away until now. It's cool that there are some collectors like this otherwise we would never be able to find a hidden treasure. It's nice to know there are still some awesome finds out there."
More photos of the rare game can be seen here:
https://www.flickr.com/photos/mike217/sets/72157652935416630
Full story and details here:
https://pinside.com/pinball/forum/topic/kingpin-8
"Not much to tell. It was owned by a collector who was very private. He bought in the late 90's and tucked it away until now. It's cool that there are some collectors like this otherwise we would never be able to find a hidden treasure. It's nice to know there are still some awesome finds out there."
More photos of the rare game can be seen here:
https://www.flickr.com/photos/mike217/sets/72157652935416630
Full story and details here:
https://pinside.com/pinball/forum/topic/kingpin-8