How much are Graf Zeppelin stamps worth?

Answer 1

That depends a great deal on what you mean when referring to Zeppelin stamps.

US C-13, C-14 and C-15 - Commonly referred to as "The Zeppelins" can be purchased for around $1,800 for a set mint or used. A dealer might purchase them for 60-75% of that value.

US C-18 pictures a Zeppelin type airship and it can be purchased for $170 mint and $140 used.

Many collectors are looking for covers (envelopes with stamps and cancellations intact) that were carried by Zepplins, usually indicated by a special cancellation of cachet. These are fairly rare and can easily bring hundreds of dollars, may be more if they have one of the Zeppelin stamps on them!

Other countries have issued Zeppelin stamps as well, you would need to consult a catalog for that country to determine value.

Answer 2

If they give you a rush every time you look at them, they are worth a great deal.

The set of three mint US issued Graf Zepplin stamps can be purchased for about $1,700.