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

1991 Red Overprint on Satellite Set

Here are the relevant catalogue numbers:

100r on 2r: no image available yet.

150r on 3r, used:

200r on 5r, used:

300r on 10r, used: and unused:

500r on 15r, used: and unused:

1,500r on 20r, used in Battambang: and used in Phnom Penh:

2,000r on 35r, used:

Herrick Stamps, based in New York, currently have some of the above items available on eBay.  Here’s the text included by Herrick Stamps:

“1991, space travel with new red value surcharge: 150/3R., 200/5R., 300/10R., 500/15R., 2000/35R. Each canc., PNOMH PENH 10.10.91", probably first day. Cert. Osper (2008): These are the only Loose stamps of this issue known to me, the two other values 100/2R., 1500/20R. are only reported on cover. The scarcest postage stamps of Cambodia”.

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.

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

                                                                                                       Signed Die Proof, 10r.                                                                                                  

1971 Musical Instrument Set - UNISSUED

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

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