Unfortunately a few matters are described very inaccurately! It seems as if written by just someone who hadn't the faintest idea about this series. At least not an expert on 20th-century postage stamps.
Auflage mehrere Auflagen bis 1960
As if the printings stopped in 1960! Most printings of the 10F were made after 1960, especially the coated paper verrsions and the ones with OBA in the coating and/or paper mass.
Zähnung L 11 1/2
und
Format 39x25.5mm
There was no line perforation! Joh. Enschedé en Zonen did use a comb perforation on their Grover machines. I.e. they used their standard-size B15. I.e. Comb 11:11 3/4 with 22/15 teeth horizontally / vertically. The width of the stamps is EXACTLY 40mm! Not the 39mm they measured!
Standard-size B was in use since 1929 and used for the Switzerland Pro Juventute Welfare stamps: B14 i.e. 22/14 teeth hor./vert. The sideways pins could be varied in number!
to be continued ...