The stamps by themselves have essentially no value. But if the stamps are on an entire card or envelope (not just on a small piece of card or paper) then they have value to cover collectors. And the picture side of the cards, if any, will be of interest to deltiologists.
I agree with the direction which Germania takes ... this is not a stamp question, but rather a "postal history" question. Indeed the stamps are of very minimal value, but the entire cards or envelopes with their pictures, postmarks, messages, etc., is where the value may lie. It might be useful to you to post front/back images of the 2 or 3 which you believe to be the most interesting and see what can be learned from them. Do not toss them.