Moons of Jupiter fountain pen : Valetudo

This is the first in the series: The Moons of Jupiter. The coppery garnet in this fountain pen represents what we think one of Jupiter’s 79 moons, Valetudo, might look like, against the blackness of space. Discovered in 2017, this moon is a maverick. Whereas most of its larger moons follow Jupiter’s direction of rotation (and are therefore known as prograde moons), some of the others which are further out orbit in the opposite direction, (and are known as retrograde moons.) And then there’s Valetudo, which doesn’t follow the rules. It is travelling at the same distance as the retrograde moons, but in the opposite direction.

According to, Valetudo even crosses the orbits of the other moons. Quoting Scott Shepherd, who led the team that found this moon, “It’s basically like you’re driving down the highway in the wrong direction. Cars are coming right at you, and it’s very likely you’re going to have some head-on collision” … at some stage in the next billion or so years.

We cannot help but admire a renegade moon.



Dainty Dafoe Model.

Series: The Moons of Jupiter.


Black resin with an exceptional sheen, with coppery garnet-coloured inlay. Note: the garnet colour goes right through the pen so there are rows of ‘moons’ on both sides of the barrel. The grip section is made from the same streaked coppery-garnet resin.


Jowo #6 in polished steel, or Bock #6 in polished steel or bicolour (shown in these photos i.e. steel and gold-plate. Please select Fine, Medium or Broad in the check-out. (Please DM me if you need an Extra Fine.)

Refill type:

Standard international fountain pen converter (supplied) or ink cartridge.


Total length (closed): 136 mm (5.4″). Length (pen only, no cap): 131 mm (5.1″). Diameter at widest point (excl. cap): 15.1 mm (0.6″). Diameter of section at narrowest point: 10,3 mm (0.4 “).  Cap thread: 13 mm (0.51″).


Within South Africa, we offer a flat rate of R125 for couriering smaller items.

International shipping is via a courier or express postage with a tracking number and should take around 10 – 20 working days. Pens are securely packed and insured.

Please use the checkout to see the shipping cost for your location.