Got a working Captain Silver board in a Nintendo cab. RARE?

[GameDork]

     So, I haven't been around here in a while. I had to ask about this board/cab my father in law got.


     He called me one day and said he could buy this arcade . He said it was a Captain Silver with the header and everything works. I thought, WTF?, I have never heard of it. I just thought it was some clone of a crappy game. Anyway I looked it up on KLOV and it says:

Rarity (VAPS.org)
Very Rare - There is one known instance of this game owned by a known collector. Of these, 0 of them are original dedicated machines, 0 of them are conversions in which game circuit boards have been placed in another game cabinet, and 1 of them are only circuit boards which a collector could put into a generic case if desired.

Of the 4,341 video games tracked by the International Arcade Museum and the KLOV, this game ranks #84 in popularity based on ownership records.

So, I told him to go snatch it up!! I have been over there since and it seems to be it! It is in a decent Nintendo cab.

So, how rare is it? and what would it be worth? He wanted to sell it to fund me building him a MAME machine.

Is there anyone out there that has any other info on this thing?

[GameDork]

Anyone have any ideas/heard of  this game??

[TOK]

Never played it. Can tell you that you can't use VAPS to determine either rarity or value despite what the ebay auctions would have you believe. VAPS/KLOV calls every game nobody wants rare because it's based on games in collections (and mostly old info at that).
VAPS calls Quantum and Major Havoc common, even though they truly aren't, and they're two valuable and collectable games. Because people have them, because they're collectible.

The whole thing is backasswards.