Thanks Steve. The pen was restored by a very qualified craftsman, so similar to polishing a watch case, he polished the snow cap a bit to try to remove a big dent (which is still quite visible).
Regarding the size of the pen, it's a #9 nib so it's the same nib size to the 149. Following is a quick snap with other pens side by side.
Right to left - MB #30, 1950's 149, the 139L, 136, a Danish made MB214, MB 235, MB146, MB149 75th SE.
The 139 is shorter than the 1950's 149 and the 1950's 149 is just a little shorter than the modern 149.
The pen still has the 139L imprint on the blind cap, and the expected D.R.P. 652406 patent imprint. Silver cap bands are tight, the gold capband imprints are a little fainted but still visible. New cork and the nib is a lovely flexible one. Palladium nibs were only used for like 1-2 years in WW2 as gold usage was verbotten. When Germany started losing, they forbidded the usage of Pd and only steel nibs were allowed. The only problem to me is that the feed is not same era ski slope flat feed but a late 1950's full length split feed. I don't think I can be too picky on this one. It's a grail as the nib is just so nice
This pen, unfortunately, is a short ink window version, which is more common.
I would say it's approx the value of a mint M series 14060m sub.