What is the value of two unused Benjamin Franklin US postal stamps still in booklet?

Answer 1

Ben Franklin has been the subject of numerous stamp issues. You will need to consult the catalogs and do some research. There are lots of stamps issued and they vary in value from almost nothing to some nice values.

Most libraries will have a copy of Scott's Postage Stamp Catalog of the World. First of all, you have to identify the specific stamp or card. That in itself can be a daunting task, but most of the catalogs are well illustrated with lots of information. Once you know what item you have, the catalog will provide a set of prices that can be used to estimate value.

Answer 2

That would be Scott Number 300. You can purchased them used for about 15 or 20 cents, but no one is likely to want to buy a single copy. A mint copy will set you back about $13.