The thing is, that board looks almost identical to a Galaxian board - although the daughter card is different, and there is no solder mask. It might not even be Galaxian - it might be one of the numerous other bootleg games that ran on the same hardware.
If you have a ROM burner, you can read in one of the ROM chips and use RomIdent to figure out what it is (provided it's in the database).
I would double check to be sure the power matches up with Galaxian, and if so, I'd say it's reasonable to assume it matches the Galaxian pinout, and try it out.
-Ian