Mug From The Past

I was in a thrift store today and saw this mug:

There were four of these mugs in fact.  They caught my eye because I had *just* been thinking how I used to have this awesome sugar bowl that looked exactly like that – it was from a set that my parents had when I was little and I got it when I’d moved out. It got broken at some point and I remember my sister being pissed off at me because she really liked that sugar bowl too.  Anyway, I’m currently in need of a sugar bowl and so was thinking about that sugar bowl and then out of nowhere I see the mugs from the same set.  From probably 30 years ago.  What are the odds?