With the opening of the first post office in the border town of Phuntsholing in October 1962, the first handstamps were made public as well. The handstamps made available to each newly opened post office were a set containing a regular handstamp, one with PAR added for parcels, one with TEL to be used for telegrams, one with a slightly different design with M.O. added for the money order form, a differently shaped postage due stamp and a negative handstamp for marking wax seals used to close mailbags, although at a certain moment aside from the normal one, there were also negative seals with PAR, REG, and TREAS added. It looks like that the handstamp with REG added for registered mail, came only in the picture once registered mail became possible. Some newly opened post offices received temporarily first an EXPTL. (experimental post office) handstamp, till the specific handstamp for their location would be available. For the M.O. form other seals were required as well: an oblong seal with the name of the post office (with or without date), a small triangle seal with the letter P inside, and 12 small square seals, each with two letters in capital representing each month. In the first few generation handstamps, the M.O. handstamp differed also considerable from the other handstamps. On top of the handstamps mentioned, the postmaster might have a rubber seal stating “Postmaster” with the name of the post office. Sometimes some post offices or postal agencies made use of a special rubberstamp to cancel mail.
Although I present here a clear chronological history of the introduction of handstamps and related postmarks, with some exceptions and extras, the reality was much more chaotic. When new sets were distributed, many post offices would put them unopened in the cupboard and continue with the old set. Other P.O.s would use all or part of the newly received set, in combination with all or some of the first received set or sets. So many if not most P.O.s would be using handstamps of the different sets distributed over the years. On top of, some postal agencies were using handstamps of other post offices, like in 2008 Yadi CMO (Community Mail Office) was using an old Tashigang Dzong negative seal to cancel its mail. There were also handstamps made for post offices which were never opened, like the proposed Manas PO.
First generation postmarks with dorjis
2nd generation postmarks with crossed daggers
Second generation postmarks with daggers
3rd generation postmarks, existing with and without lines above and under the date indication
Third generation postmarks with diamonds
The third generation released after 1972 follows the 1962 sequence of day in figures, month in English abbreviation and the two last figures of the concerned year. Instead of two crossed daggers there are now two diamonds. In some cases the diamonds are just dots, because of lack of space as the name of the post office in question was rather long The division of the inner circle is the same as in the 2nd generation handstamp. The “TEL” version is rare.
4th generation with divided inner circle providing space for date mark; Gedu with open halve circles. This time the MO seal is in line with the other post marks
Fourth generation postmarks (without any particular marking)
Special case: post mark with stars
EXPTL. postmark with daggers
EXPTL. postmark with diamonds