I thought the only place I should sell something like this should be on a U2 fan site.
I have an original vintage badge which was used to promote The Joshua Tree Tour. It is not a modern reissue. I got it in 1987 from a friend who worked at Island records UK. I just got divorced and I need the money. I know its worth a lot since its a limited addition, and very rare and in mint condition.
Looks terribly cool, but we have a fantastic U2 Collectibles thread where this should go indeed. Post it there and you will get some interest for sure Good luck!