Mutawakelite Kingdom of Yemen stamp price

I have some sheets of the above stamps from Philympia 1970 London. they are 1/4 bogshah with a picture of Buckingham Palace. Do some stamps of this type have errors? If so what is the error? What are these stamps worth, good or with error?

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Stamps Value.