As a resident of Indonesia, from personal experience, I would say that there is interest in numismatics across the board.
This ranges from the mundane: one coin or banknote from every country to the obscure such as buying common coins and paper money to be incorporated into collages and other artwork to the bizarre like using British, Australian and other pennies, pouring some type of Acryl on them in order to renovate the floor of a bathroom.
Generally serious collectors here are those with money and educated to a greater rather than lesser extent.
There is a market for items ranging from 1¢ to multiples of $1000 Dollars.
The passion albeit oftentimes hidden is invigorating.