Beleagured Zimbabwe released new denominations of bearer checks May 6, already topping its April issue of ever higher denominations. Bearer checks are circulating as a form of currency in Zimbabwe where inflation has made some lower denominations nearly worthless.

These newest bank notes are denominated Z$250,000,000 and Z$100,000,000. A Chinese Web site has an image of a newspaper showing the new notes, which is the best look at the new issues that I've seen online so far.

These Z$250 million and Z$100 million notes appear to be the highest denominations issued anywhere. (If that's not so, I hope someone will advise with a comment.)

Yesterday I received an e-mail suggesting the United States revive its $500 note. Do we have need of a $500 bill now? Will we in three years? That's about the fastest I think such a note could be authorized, designed and issued.