I got this pen with a calligraphy dip pen set I received as a gift some years ago. I'd say it is a regular, cheap Chinese 'student pen' of some sort. At the beginning I didn't pay much attention to it, as I use mostly left oblique and italic nibs (for writing in the Arabic and Latin alphabet) and flex nibs on occasion. Here are a couple of pics of it (side up and side down):
It has no flex and gives a regular EF line with no line variation at all. It isn't the smoothest writer (it's a bit toothy) but it has a huge deposit on the back, meaning I can fill about three quarters of a regular A4 sheet with a single dip. Also, I'm a right-handed overwriter and my hold of the pen is usually between 120-150º. I obviously switch to underwrite for traditional calligraphy, but then I write very slow with attention to detail. However, I have relatively recently discovered that, with stiffer pens, as this one and other 'general purpose' pens (such as Leonardt 256, which is readily available where I live, to give an example), I can write with my usual hold (and my usual handwriting) while using a wider variety of inks than a fountain pen would safely allow.
The big question is I have been looking for a pen with this kind of reservoir elsewhere, to replace this in case it gets damaged, but to no avail. The only pens that appear to be sold with a reservoir in the UK are Brause and Leonardt square pens (and Mitchell's with the removable reservoir) and while I have found some pens with apparently similar characteristics and a reservoir over the nib on Ebay and AliExpress (sold as comic sets) I haven't found even those on specialized websites (such as Scribblers or Penmandirect in the UK). The pen has the number 126 written on it, together with two Chinese characters which appear to be 灯告 (although I'm not sure because Google Translate says this means a 'lamp' and I sadly know nothing about Chinese). Anyway, this information hasn't helped me on my search.
So do any of you know of any similar pens (possibly smoother) and where could they be had?