| Description | English: “The Value of Time,” by Harold DeLay, from an advertisement for Elgin watches. It depicts Charlemagne receiving the gift of a water clock sent by the Caliph Haroun-al-Raschid. |
| Date | 1922 |
| Source | Advertisement for Elgin watches in Shadowland (https://archive.org/details/phojun22chic/page/n539/mode/2up?view=theater) |
| Author | Harold S. De Lay |