Genuine vs. Forgeries
1st set of forgeries. Thick fiberous paper. Appeared March 1958. 7-lines radiotelegraphic genuine postmark. Also exist with genuine Type VII ( T15 ) and VIII (T42) Lhasa postmarks.
1st set of forgeries.
Appeared March 1958. Sheets lacks the rough marginal framing. Six clichés in the sheet. Printed from a 8 Tranka cliché.
2nd set of forgeries. Appeared March 1973
copied from Haverbecks Handbook
4th set of forgeries on forged cover. Both stamp and postmark are forged. Appeared late 1982. Six different clichés pr sheet.
Thanks to Bo Olsson for images and analysis of Tibetan forgeries