Whilst I do not collect Tibet. I'm sure others will greatly appreciate the information.
The three parts deal with the 1912, 1914 and 1933 issues forgeries.
Later probably also a forth part dealing with ”oddities” including the very modern forgeries which should not be dangerous at all, crude designed as they are.
However, the first part ”1914" is now available for free downloads at
For those of you who visit Rainer´s Tibet pages for the first time you will find there is a lot of exiting things to read and check about.