It would be hard to evaluate without seeing it. The value of a mis-perf depends on many factors, including how far off the perfs are and whether it is a single stamp or a group of stamps where the mis-perf is easier to understand. It is often caused by a sheet of stamps getting a fold in the printing process.
The A series stamp pictures an eagle. It has a face value of 15 cents.
That stamp was issued in 2005. It has a face value of 25 cents.
15 cents
That stamp was issued in 1985. It has a face value of 22 cents.
The purple B stamp with eagle has a face value of 18 cents. It can be purchased for about a $1 mint and .20 cents used. It's a pretty common stamp so the value has never gone up. It was issued in 1981 and cat# 1818 if you want to look it up on Ebay to make sure we are talking about the same stamp.
About a dollar or two, depending on their condition. They aren't worth a lot, except to collectors of loyalty stamps.
They do have some value for collectors. And if they haven't been used, they can still be used to mail a letter, with the addition of value to the current rate.
The tulip stamp was marked as the F Flower stamp. It has a face value of 29 cents.
There have been hundreds of 1 cent stamps issued by many different countries. You will have to identify the specific stamp by using a catalog or reference book. That will also provide an estimated value.
It is a forever stamp. It is good for the current value of a first class stamp.
I believe you are describing Scott Number 1734, a 13 cent stamp. Issued in 1978, you can purchase a new copy for 65 cents. A used copy will cost you 15 cents. You would be lucky to get 15 cents for a mint copy, as most dealers won't work with a single copy of a stamp at such small value.
The value of a Top Value Stamp, "Toppie," the elephant sign is approximately $42. The better the condition of the stamp, the more money it will be worth.