2025 Astronomical Observatories Medallion & Stamp Cover PNC

2025 Astronomical Observatories Medallion & Stamp Cover PNC

The Melbourne Observatory stand adjacent to the city's Royal Botanic Gardens and commenced operation in 1863.

Soon after, a 48-inch telescope, known as the Great Melbourne Telescope, was installed. 

At the time it was the largest fully steerable telescope in the world and participated in the global viewing of the transit of Venus in 1874.

The stamp shows an illustration of the Great Melbourne Telescope, currently under restoration, and an 1875 photograph of the Moon as seen through this telescope.

The medallion's reverse features the Astronomical Observatories and image of the telescope.

Each medallion's obverse features the inscription 'GREAT MELBOURNE TELESCOPE' with an image of the telescope.

This uncirculated medallion is housed in a beautifully designed card inside an illustrated envelope.

Affixed to the envelope an official Australia Post $1.70 stamps. Postmarked for the first day of issue and the envelope includes Australia Post's Seal of Authenticity.

Postmarked First Day of Issue 30 September 2025, Sydney NSW 2000

Denomination :    Medallion

Finish :                  Zinc Alloy

Metal :                  Zinc Alloy

Weight :                55 gms

Diameter :             55 mm

Mintage :              1,500

Certificate of Authenticity : Australia Post Seal of Authenticity

Note : Pictures for illustration only. Serial numbers will vary