It is strange using an ATM in Zimbabwe in that it dispenses US dollars. Unlike most US ATMs, it will dispense fifties and hundreds. Larger notes are mostly clean, but dollar bills are absolutely filthy. They are used until they fall apart.
That would be nice, but with weight restrictions being what they are particularly on international flights, toting along an extra two pounds of $100 in coins is unlikely.
Notes are US, but coins are South African rands.