Chuck spied these at the flea market Sunday and we bought them. They were marked $10, but I bargained them down to $7. When I got them home, I noticed a sticker under the first one and it was marked $25. I looked it up on the internet but couldn't find an exact match for this set. The closest I could find was selling for $66. Interesting. Anyway, these had to be made before WW I or II ( my history dates stink....my dad would not be proud) as one of the blocks on the inside cover is shaped in a swastica.