Old skinned superior runes

I have a couple of superior runes that I've kept from when they had the same skin as minor runes, so they still function as superior runes but look like minors. I only kept them out of collector's interest, but was wondering if they might conceivably be a collectible?

The runes are superior air magic and superior fast casting. I can provide screens if you don't believe me.

So what do you reckon, are they worth much as a very very rare item?

p.s. searching I found some similar threads on superior vigour runes but the replies were vague and not very many.

Well, they're definitely a collectible. It's hard to say what it's worth since the price is dependant on what the collector wants and how much you are happy to let it go for. Your best bet would be to start an auction and see what kind of responses come up. If there are no collectors around, there isn't much you can do about it. If there are, then see what happens.