These are a collection of original sales documentation which I thought you may be interested in. They range from 1973 for the 'Cossack Range' up to the late 1990's for the Urals.
To view each file click on the picture, these are Adobe PDF files. Adobe may also be installed already on your machine, if so just click the relevant icon. If not you can download it by clicking on the Adobe icon above.
If you have any information sheets such as these we would be please to see them, please contact me on the email address shown above.