Please help me identify this ICSA pen.
What I know about it:
1 It has a blue celluloid body and cap.
2 It has the ICSA logo, the acronym ICSA, and Reg Inter etched on one side of the barrel.
3 It is 11 cm long, capped.
4 It has gold trims: a single band on the cap and the clip.
5 It has the ICSA logo in red and gold on its top finial.
6 It has a screw cap.
7 It has a black section.
8 The nib has quite the flex.
9 The nib has “ICSA” on it, under which is the ICSA logo, under which is “14k”, and under that is “2”.
10 The semi-cone bottom finial is a blind cap which, when unscrewed, features the button-filling mechanism.