Size: Capped - 128mm, posted - 156mm.
This is a beautiful glossy deep burgundy marbled casein No. 12 with gold veins. It is in excellent condition - I can see no damage on this very well presented pen. The cap has a conical gold plated top "jewel" and a long gold filled pocket clip with the "CS" cypher within a diamond cartouche at the top and another diamond at the bottom end. There is also a single gold filled cap band. The barrel has a good clear and easily read imprint opposite a short filling lever. This has a circular end tab and "CS" within a circle imprinted on the tab The nib, a lovely Conway Stewart No. 3N, is made from 14 carat gold and is in a medium-fine point. The box has a little bit of scribbling to the top of the lid (this actually has three initials and a year - 1960 - which allows us to date the pen from probably 1959 or 1960) but is otherwise very clean and tidy. Inside there is the original instruction sheet.
I have fully serviced this pen. The nib is very smooth and lays down a really lovely wet and medium to fine width line. It does have some softness too, and will provide for a tiny bit of line width variation from a fine to a medium width as you write.
A lovely slim pen in excellent condition, and a great writer to boot!