Exlusive Koltsov Plates
These plates are called exclusive, because they are specific and have been issued in different times, therefore do not form part of any series. One of the reasons is that these were issued later then the 4 x 8 series, the other reason is that due to their specialty their production is not continuous, that is because of their specific character they are not always available. Therefore I will specify at the beginning of the contect description of each plate whether that plate is available at the moment.