| 2022-08-24 | Gold stds. |
| 2022-01-15 | Gold units: Abbr. |
| 2019-10-17 | Gold standards: Abbr. |
| 2016-09-14 | Jewelers' purity measures: Abbr. |
| 2016-01-22 | Some chess pieces: Abbr. |
| 2014-11-08 | Some chessmen: Abbr. |
| 2014-03-29 | They often land next to queens: Abbr. |
| 2014-03-13 | Gold units: Abbr. |
| 2013-07-07 | Gold units: Abbr. |
| 2012-10-07 | Gold units: Abbr. |
| 2012-08-04 | They may sit next to castles: Abbr. |
| 2011-10-15 | Gold meas. |
| 2010-12-16 | Pawn jumpers: Abbr. |
| 2010-01-14 | Gold stds. |
| 2009-03-22 | 24 of them = 100%: Abbr. |
| 2008-10-08 | Gold meas. |
| 2008-06-04 | Measures of gold purity: Abbr. |
| 2007-07-01 | Some chess pieces: Abbr. |
| 2007-05-24 | Some chess pieces: Abbr. |
| 2006-09-17 | Gold units: Abbr. |
| 2006-05-13 | Figures from 1 to 24: Abbr. |
| 2005-11-27 | Gold units: Abbr. |
| 1996-04-14 | Chess pcs. |