Are there valuable postal stamps from Czechoslovakia?

There are valuable stamps from all over the world, it depends on how rare it is, it may depend on if it has a mistake on it, it depends if its used or never been used, it depends on the shape it's in. There are website you can find that will have the value of stamps along with pictures, I had a bunch of stamps that turned out the only valuable bunch in the whole bag were the ones from the soviet union. Do some research and you will find your answer. Good Luck. Try doing a search for Czechoslovakia stamp values.