ANSWER:

If these are not in circulation anymore, and they are not gold or silver, these are not currency anymore. 

QUESTION: Can I sell old money for higher value for e.g can I sell a rare £1 coin for £10 if these coins are old so they are no longer used for transactions rather they are bought to be kept in a collection. However these coins could also be traded for coins that can be used for transactions.

Halal/Haram Matters |