Just wondering about a whether signed drum heads are actually decent for signatures as far a preservation. Are there any known problems with fading or deterioration that make them less that desirable? I see a lot of them on ebay, but I assumed that's because they're somewhat cheap and safe to have on hand as a "generic" item to get signed. Normally I don't pay much attention to them since they seem kind of bland, but there's one in particular I have my eye on.