| John Vetter | Joe and Linda Roberts | Barry Oremland | Mike Shaw | ||||
Crown database administrator | Crown database administrator | ||||||
| United States | United States | United States | United States | ||||
| Bob Burr | Ron Small | A. Noah Harrison | Thomas Bringle | ||||
Crown database administrator | |||||||
| United States | United States | United States | United States | ||||
| Detlef Rahlf | Javier Solero | Brian Langenbach | Mike Blake | ||||
Crown database administrator | Crown database administrator | ||||||
| France | Spain | United States | United States | ||||
| Daniel Sidre | |||||||
| Belgium |
Crowncap Collectors Society International Crowncap Database Team