| 2024-09-22 | U.S. currency: Abbr. |
| 2013-11-17 | "Almighty" item: Abbr. |
| 2013-01-17 | Capital of Australia: Abbr. |
| 2013-01-03 | Aust. currency |
| 2012-05-23 | Currency board abbr. |
| 2012-03-08 | Capital of Australia: Abbr. |
| 2011-08-31 | Capital of the U.S.: Abbr. |
| 2010-10-28 | Capital of the U.S.? |
| 2008-10-09 | Can. or Aust. money |
| 2007-08-04 | Capital of New Zealand: Abbr. |
| 2006-01-29 | Can. money |
| 2005-11-18 | Currency board abbr. |
| 2003-10-12 | Euro competitor: Abbr. |
| 2003-04-11 | Currency abbr. |
| 2003-01-06 | U.S. or Can. money |
| 2002-08-24 | Capital of Canada: Abbr. |
| 2001-10-02 | U.S. currency: Abbr. |
| 1999-01-29 | Competitor of the euro: Abbr. |
| 1997-09-12 | It makes a lot of cents: Abbr. |
| 1996-09-29 | Abbr. at an exchange office |