| 2024-12-27 | Distinctive mark |
| 2022-10-15 | COPY, perhaps |
| 2022-02-26 | OK, in a way |
| 2022-01-03 | "Forever" purchase |
| 2021-09-12 | 77-Down is on the most collected one in U.S. history |
| 2021-08-27 | What takes a licking and keeps on sticking? |
| 2021-03-31 | Benjamin Franklin is depicted on the first U.S. one (1847) |
| 2021-02-22 | It may say "Forever" |
| 2021-01-29 | One might be forever |
| 2021-01-10 | Really put one's foot down |
| 2020-12-16 | Part of a philatelist's collection |
| 2020-05-30 | One stuck in a corner? |
| 2020-05-15 | Impress |
| 2019-05-20 | Post office purchase |
| 2018-01-07 | With 48-Down, philatelist's collection |
| 2017-10-26 | Impress |
| 2017-01-24 | Philatelist's buy |
| 2016-08-31 | "PAID," for one |
| 2016-02-23 | Passport certification |
| 2015-06-21 | - |
| 2015-05-02 | "Approved," e.g. |
| 2013-09-01 | Sign of approval |
| 2011-12-18 | Purchase that's canceled |
| 2011-03-17 | Corner piece? |
| 2010-11-20 | Forever ___ |
| 2010-06-24 | Perforation site |
| 2008-05-25 | Sign of approval |
| 2008-02-27 | Notary's item |
| 2008-01-27 | Pouting person's action |
| 2007-06-11 | Post office purchase |
| 2007-03-24 | Show impatience, in a way |
| 2006-07-02 | Album feature |
| 2005-09-20 | Snail mail attachment |
| 2004-01-26 | Envelope sticker |
| 2004-01-11 | Approval sign |
| 2002-06-29 | It may make an impression |
| 2001-12-02 | It may get a licking |
| 2000-10-31 | Passport feature |
| 2000-05-06 | Express displeasure |
| 1999-03-17 | Kind of pad |
| 1996-07-03 | Approval |
| 1996-04-24 | Characteristic mark |
| 1996-02-09 | Approve, in a way |
| 1995-10-27 | It may travel first-class |
| 1995-10-02 | Item in 5-Across |
| 1995-04-28 | It goes in a corner |
| 1995-04-16 | 33-center |
| 1994-09-13 | Philatelist's item |
| 1994-02-16 | Notary public's need |
| 1994-02-09 | Philatelist's item |