Nokta FoRs Gold, a Gold Cube, 2 Keene Sluices and Lord only knows how many pans....not to mention a load of other gear my wife still doesn't know about!
They're called 'Poker Dice' and used in much the same way as if you were playing with cards, except that your hand can only have the face cards and 9, 10 or Ace, and flushes aren't possible because the dice have no suit marks. I still have a set that my grandfather gave me in the 1960s or 1970s. He used them during his spell in the Navy during WWII.