Indochina, Coronation of King Sihanouk, October 15th, 1941, Michel Nr. IND 256-258; Three stamps with nominals of 1C, 6C and 25C were issued in perforation 11.5.
Here is the mint set in blocks of four (the stamps were issued without gum but one stamp in each block is hinged).
These stamps were not officially released imperforate, however a small number of imperforate trial proofs have come to market. Here is the imperforate 1C stamp as a mint never hinged pair.
Here is the cancelled to order set featuring First Day cancels.
Home Made First Day Cover featuring the special cachet created for the occasion.
Mixed franking featuring the entire set on a registered domestic letter that Jacques Dessrosseaux, the well known philatelist, send to himself on the First Day of Issuance.
Registration Nr. 090310