4760) "Eise Eisinga Planetarium - the oldest working Planetarium in the world (set up in 1774)," The Netherlands: The Royal Dutch Mint (Koninklijke Nederlandse Munt, abbreviated KNM) has issued a 10 Euro Gold Proof Coin featuring the Planetarium: Date/Year of Coin issue: 2026: Delivery from: 29.10.2026:
Eise Eisinga Planetarium 10 Euro Coin 2026 Gold Proof
The Header/Banner is titled - OFFICIAL COMMEMORATIVE COIN 2026 - Eise Eisinga PLANETERIUM".
Golden issue for the oldest
working Planetarium in the world:
- One-man, countless
calculations and notes, an ingenious gear mechanism driven by a single clock,
and the result: a planetarium that remains operational to this day.
- The Eise
Eisinga Planetarium demonstrates what is possible when knowledge, patience, and
craftsmanship come together.
- The Planetarium was designated a UNESCO World
Heritage Site in 2023, and now an official commemorative coin has been issued.
- Commissioned by the Ministry of Finance, the Royal Dutch Mint presents the Eise
Eisinga Planetarium 2026 Gold Ten Euro Coin.
Eise Eisinga:
- Eise Eisinga was born on February 21, 1744, in Dronrijp, the son of a wool comber. Following tradition,
he worked in his father's business alongside his schooling.
- His father also
played a key role in fostering Eise's interest in astronomy and mathematics;
from the age of fifteen, Eise walked to Franeker every week for extra lessons.
- At the age of 24, Eise Eisinga married and became a wool comber in Franeker.
However, his interest in astronomy did not fade; he built the Planetarium
during his spare time.
The Planetarium:
- Based on hundreds of
calculations and notes, Eisinga began building the Planetarium in 1774 in a
truly unique location: his own living room.
- The solar system was scaled down by
a factor of a trillion, and an elaborate gear mechanism had to be constructed to
set the Planetarium in motion.
- A remarkable detail is that a single clock
drives the entire system; for this, he collaborated with a professional Frisian
clockmaker.
- His father and brother were also involved in the project. Today,
the Planetarium remains fully functional and intact.
Design:
- The Eise Eisinga Planetarium Gold Ten-Euro Coin was designed by Armand Mevis. He opted for a clear and accessible design.
The Obverse and Reverse of the 10 (Ten) Euro Gold Coin placed together.
The Reverse of the 10 Euro Gold Coin- The Reverse depicts the sun and the planets known at the
time; these planets appear in relief, raised above the coin's background.
- At
the centre of the coin stands the Planetarium itself, inspired by a drawing by
Barentie Willem Dietz from 1824.
- Shading techniques are used to render the
living room—and the Planetarium within it—in perspective.
The Obverse of the 10 Euro Gold Coin
- The Obverse features
King Willem-Alexander, his gaze directed toward the cosmos.
In the background,
two well-known astronomical phenomena—discovered years after the construction
of Eise’s Planetarium—are depicted: the black hole, predicted by Albert
Einstein’s theory of relativity, and the nature of the Milky Way galaxy,
demonstrated by Edwin Hubble.
This top quality Gold Proof
coin comes in a luxury wooden packaging with the logo of the Eise Eisinga
Planetarium carved in it together with a Certificate of authenticity and Information Brochure (IB).
The specifications of this Coin are:
Country: The Netherlands
Minted By: The Royal Dutch Mint (Koninklijke Nederlandse Munt, abbreviated KNM)
Metal Composition: 900/1000 Fineness Gold (Au)
Weight: 6.72 g
Diameter/Size: 22.50 mm
Coin Quality: Proof (P)
Nominal value: 10 Euros
Mintage: 750 pcs
Edge: Serrated
Presentation: Delivered in a luxury packaging
Delivery from the 29th of October 2026
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For interesting posts from the Caribbean Netherlands on this blog:
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Dutch Castles Coin Series:
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Links to Posts on Pieter Mondriaan (or "Piet Mondrian"):
Experience Nature Stamp Series:
Typically Dutch Postage Stamp Series "House Types & facades":
Typically Dutch Coin Series -2023:
Typically Dutch Postage stamp Series - 2024:
Dutch World Heritage Series:
