My Aunt's Dice

During the second lockdown I painted two dice.

I found them going through my aunt’s things after she died a couple of years ago.

When I started to paint the dots, I noticed that one of the dice had one dot on two sides, two dots on two sides and three dots on two sides.

So I have a D3 now.

I wonder why my aunt, who worked as a French and history teacher and wasn’t very enthusiastic about games, had a D3.