| Clue | Source | Date |
|---|---|---|
| Old Austrian money | LA Times Daily | 17 Sep 2021 |
| Old Austrian money | The Washington Post | 17 Sep 2021 |
| Former 10-mark coins | USA Today | 28 Aug 2015 |
| Former 10-mark coins | ||
| Former coins of Germany | ||
| Former 10-mark coins | ||
| Former 10-mark coins | ||
| Early German and Austrian coins | ||
| German coins. | ||
| Former gold coins, of Germany. |