I picked up a set of old Istanbul hats a few weeks back and I have seen and heard so much about "old stamp" vs "new stamp" vs "old new stamp" etc., quite confusing. Well I was wondering if anyone out there could tell me the approx age of these, are they old stamp, new stamp, etc....

Also, any type of approx. value would be great too as I am going to be selling them off, they are 13", very paper thin. One hat is 383g the other is 360g. Signature is still vaugely visible under the bell as well as the residue of the old Zildjian sticker. One hat has a funny stain on it, not too big, and one very small edge bend. Other than that, no problems, cracks, keyholing, etc...

I hear the paper thins, at least this thin, are hard to come by but, what do I know!

Thanks in advance.....