I am a UK based collector of cipher systems - de-classified ones only.

My collecting is centred on 'rotor-based cipher systems of the 20th
Century'.

I am no mathematician or cryptographer - just a guy interested in the
history that goes with these systems.

More and more people are collecting them - if they can find them.

Also, I would like to make new contacts around the world.

If you would like to correspond about collecting then please email me.

Regards,

John Alexander (ebay:  jalex-uk)
England


Collecting Code and Cipher Systems (de-classified)