14 - Bombe Numbers
The various types of Bombe built are as follows:
| Type | Number |
| Early three-wheel 36 Enigma | 73 |
| Four-wheel 36 Enigma (BTM High Speed Keen) | 57 |
| Four-wheel 36 Enigma (GPO/BTM) Cobra) | 12 |
| *Later three-wheel 36 Enigma (High-speed Siemens-type sense relays) | 69 |
| TOTAL | 211 |
| United States machines | 145 |
*This type is the one built by the Rebuild Team on display at The National Museum of Computing
(c) John Jackson