No. 126 PL
L to R: 146G, 134 war-time, 126PL
The 12x series was available in size 2, 4, 6, 8, and 9. But the PL colour was only made for the 122, 124, 126, and 128.
As seen in the picture here, the 126 came in a variety of designs apart from PL, like hatched guilloche (S), pearl marbled (P), and glatt (G).
For bibliography, see Resources page -->link
Jordi Lopez -a long time collector of vintage MBs and generous contributor to this website - explained to me (see interview ->link) that he believes there were three versions of the 126 PL:
First version - Made in Germany for the German market with the "Meisterstück" imprint on the cap, and with a long cap top. This is the rarest version, with white gold plating on its furniture.
Second version - Made in Germany but for the Danish market, without any imprints and with a shorter cap top. This looks like the pen featured in our review.
Third version - Made in Denmark, with "De Luxe" imprinted on the cap top.