The 234 1/2 Deluxe was made '52-54 only....a standard sized pen like the regular 234 1/2. Meisterstuck clip and a different cap band.
Semi-flex KOB....a writing nib, thinner than modern's B nibs.
The 236 looks medium-large; which was the size of the 146 back then also.
Edited by Bo Bo Olson, 29 November 2017 - 10:42.