I have a valuable vintage Boggle game

I discovered recently that I have a rare collectible in my game collection. It's a Boggle game from the early '80s.

Boggle has 16 six-sided dice with letters on the side that you mix up in a square grid and then try to identify as many words as you can from adjoining dice in the three minutes it takes for sand to run through a little hour glass.

It turns out that in 1987, after I bought my game, they reissued the game with the letters rearranged differently. And while there doesn't seem to have been any official announcement about why, people have noticed that the F and the K are now on the same cube. 

This means that when you play the "new" Boggle, you'll never find words that contain both F and K. Like "funky" or "firetruck".

But if you play Boggle at my house, those words could appear.

References:

• THE PARTY GAME WITH A BUILT-IN SWEAR FILTER
• The Boggle cube redesign and its effect on the difficulty of Boggle