United States: Orchestra Hall, Chicago, IL

To my knowledge this is the only postal product produced by the USPS that includes a representation of an organ. Scott UX152 was issued in 1990 in advance of the 100th anniversary of the hall's construction. The card was part of a long-running series of "Historical Preservation" cards depicting unique or innovative US architectural  features on American buildings. The stamp image shows the stage area obliquely, and includes two of the three tonal egress openings for the organ sound, and the facade pipes of those openings.  This article gives a good summary of the recent history of the organ including  a specification of the current instrument. The original organ in the hall was by Lyon and Healy, installed in 1904. It was rebuilt by Sauter and Sons in 1946. By 1966 that instrument needed repairs, but workers on stage damaged a significant portion of the pipework, making rebuilding unfeasible. An electronic organ stood as replacement for a decade. A new organ by Moller was installed in 1981. Renovation in the hall at the end of the 20th century included a significant amount of work on the organ by the Casavant firm from Canada, beginning in 1994. Work was completed in 1999.

Ukraine: Igor Shamo

Ukraine issued this post card in 2000 honoring composer Igor Shamo (1925-1982). The stamp image itself features various music-related elements, but the image on the lower-left of the card shows the composer with a background of organ pipes. I have not been able to determine what Shamo's relationship to the organ may be. This helpful site goes into some detail about his training and musical career, and an extensive list of compositions, but no clue as to how or why organ pipes might figure into a post card honoring him. I am not sure where or when I got this post card, and it does not appear in my Scott catalog. I would be happy to hear from anyone who can help detail Shamo's relationship to the organ, or why organ pipes feature on the card in his honor.

Philippines: The Bamboo Organ

Anyone remotely interested in collecting stamps with the pipe organ theme will be familiar with the famous bamboo organ in Las Pinas, Philippines. Chris van Doodewaard has posted a very helpful article on the organ. The builder was a priest, Father Diego Cera. It was begun in 1816, heard in worship in 1821 and called "complete' in 1824 with the addition of a horizontal trumpet stop. The instrument is made almost entirely using bamboo. The horizontal reed pipes are in fact metal. The organ endured its harsh environment for many years but was finally declared unplayable in 1972, shipped to the Klais firm in Germany in 1973, rebuilt in a climate-controlled facility that replicated its "home" conditions. It was returned and re-installed in 1975. The organ has a single keyboard, divided. It was designed and built in a Spanish style.

The organ is featured on a set of three stamps (Scott 903-905) issued in 1964. The second of the three stamps was surcharged and re-issued (Scott 1055) in 1971. Philatelic materials related to these stamps are abundant. I have accumulated envelops and postcards, first day covers and programs all using these stamps in various combinations.

Netherlands: Street organ

This stamp was issued as part of a set of two in 1981. It features a street organ. These instruments are self-contained and built on carts that can be towed or otherwise moved from place to place. These are apparently quite a thing in the Netherlands, as a cursory image search revealed many, many images. I am not able to determine the maker of this particular instrument. It has three openings for sound to emerge from the works. It seems that it was designed to be moved by hand, rather than self-propelled or towed by a vehicle. The other stamp in the set (issued for the Europa theme "folklore and customs") depicts bells. The present stamp, Scott 614, is denominated 65c.

Monaco: Cathedral

This post follows up on the earlier post on the history of the organ in the Monaco Cathedral. The stamp was issued in 2012. The instrument was completed in 2011. The website for the builder, Belgian firm Orgues-Thomas, tells us the instrument has 4 manuals and pedal and includes 74 ranks. This discussion board thread discusses the instrument, and includes the stoplist, as well as information about the inaugural concert for the instrument.

France: St John's Luneville

The famous organ at St Jacques, Luneville was featured on a mini-sheet of two stamp issued by France in 2012. This smaller stamp was part of a lavish pane of stamps issued for the Lorraine region. Ten stamps comprise the pane, along with photos and text escribing treasures of this region of France. Interestingly a "lutherie" also is represented on the pane by what seems to be the body of a violin.  The image of the organ is taken from quite a distance, so even if pipes were exposed in the instruments prospect, one would be hard-pressed to see them.  The beauty of the gallery and columns are not lost in this small stamp. See my post on the 2012 sheet for more details on the instrument. The present pane was issued in 2011, expressly for collectors.

Italy: Mercadante

Saverio Mercadante (1795-1870) was in Italian composer of some import. He was known during his lifetime for his operatic compositions. After his death his fame receded; he is not so nearly well-known as other Italian opera composers. However, his technique was much-respected, making his influence on composers later in music history significant.

Italy issued this stamp in 1970, for the hundredth anniversary of the composer's death. The image includes a likeness of Mercadante and stylized "something" in the background. This stamp has appeared on the organ topical list for some time, I believe the assumption being the background somehow is stylized organ pipes. I am not convinced however. They could just as easily be piano strings in my opinion. Mercadante was a composer of operas. He has a single organ work in his oeuvre, an "Homage to Bellini." That work was recorded in 1995, that being the best single reference to the work I could find.