| John Vetter | Joe and Linda Roberts | Mike Shaw | Bob Burr | ||||
Crown database administrator | Crown database administrator | ||||||
| United States | United States | United States | United States | ||||
| Ron Small | A. Noah Harrison | Brian McLean | Thomas Bringle | ||||
| United States | United States | United States | United States | ||||
| Detlef Rahlf | |||||||
| France |
Crowncap Collectors Society International Crowncap Database Team