Those buttons must be too old, that I have used several of them on the block...I bought them from Ankara several years ago. The owner of the store who remembered my mother as being his an old, loyal customer....I'm talking about circa 1970. He brought two big boxes of vintage buttons and said to me "These are from Cheslovakia, samples of the discontinue products, if you want to buy, just pay me a symbolic amount....". As you can imagine, I was in the candy shop, selected so many lovely vintage buttons and paid a symbolic amount. All those discontinue product samples are on my block now. I'm grateful for his favor. I always visit that stores whenever I go to Ankara and pay lots of money.