Serbian Dinar - where to sell?

[tongy89]

I have just returned from a business trip to Belgrade and have some local currency left over. I bought the Serbain Dinars at the airport in Belgrade, but I didn't have enough time to visit the currency exchange in the airport on my return so I brought them back with me. However, after calling around a few London forex branches and even my bank (Halifax) it seems nobody will buy it!

It's only aboout £50 worth but if anybody has any ideas it would be greatly appreciated. I might just list them on eBay if there is not a better option...