Maker: Merlin.
I wish I could say more about this pen, but most of its best attributes are of a tactile sort that defy easy explanation, not unlike the problem of describing a smell without resorting to simile. It might be thought of as an excellent distillation of all the lessons of pen-making that were there for the learning up to 1940 or so; looks, materials, and reliability are all there, but all slightly past the expected date. The effect is similar (oh, look, a simile) to what one gets watching the Alastair Sim version of A Christmas Carol, in that it is wonderful in all its parts, but you have trouble accepting that it was made as recently as it was.
Production Run: c. 1950 – c. 1955.
Cost When New: Apparently low, and if so it was good value.
Size: 11.9 cm long capped, 13.8 cm posted, 10.5 cm uncapped.
Point: 14k gold, which it also expresses as “585”. While marked “Merlin”, it also carries the logo of Degussa, the German precious-metals concern that for a time owned Osmia.
Body: Celluloid.
Filler: Button , capacity approx. 0.5 ml
If you are relying on the preceding information to win a bet or impress a teacher, you should read the site’s scholarly caveat. Remember, this is the internet, and it’s full of bad information.