Greek banks may, very soon, no longer issue Euros and/or issue severely restricted amounts per customer (like the capital controls introduced in Cyprus a few years back).

I know it has been said for years, now - but Greece does appear to be teetering on the very brink of default, more so than at any stage in the past. A change in currency would almost certainly follow almost immediately.

Greek bank deposits are at a 10-year low - €7 billion was withdrawn last month.