Re: Currencies versus assets
"In general, collectible is used to describe something which is only an asset to a sub-section of the population."
A friend was the executor for a person's estate in England. The distantly related inheritor lived in South America - but then came to England for a visit as they apparently presumed they would otherwise be ripped off.
When they left it was noticed that several pieces of ceramic had gone with them. Fair enough - effectively their property - and their eyes had widened when told the valued worth in the UK that had already been declared to HMRC for the inheritance tax.
My friend was quietly amused that they would be unlikely to find a similarly profitable market for them in South America.