The following are some examples of rare or unusual Cambodian stamps and related philately.

1965 International Cooperation Year                                                                         This set was never issued but some examples can be found, mostly imperforated (as seen in the 3r. example, above); blocks of perforated stamps from this unissued set are quite rare.  The above 6r and 9r sets of 3 each were purchased in the late 1990's at the Central Post Office in Phnom Penh.

Some sources suggest that the then Prince Norodom Sihanouk ordered that this set of stamps not be issued due to foreign policy issues experienced by Cambodia at that time.

1964, May 19: 

                                                                                                       Signed Die Proof, 10r.                                                                                                   October 31, 1964: 10th Anniversary of the Foundation of the Sangkum Reastr Niyum.  Some sources suggest that only 28 of these signed Die Proof's exist.  Michel: 183; Scott: 140; SG: 179  See also: http://stampissues.cambodiastamps.com/Issued1964.html

1971 Musical Instrument Set - UNISSUED

March 18, 1971:  National Territorial Defense:  19r. Aerogramme

Front

Rear