Montblanc 420 made in Spain

I have a small Montblanc that was made in Spain after the war and the factory was destroyed. I have a very rough idea of the year, but I was hoping that some expert here might help me put a more precise date for this type of pen.

I believe that Heinrich Wiese took specifications for Montblanc pens to Franco's Spain —where he was known as Enrique Wiese— and established a production factory in or around Barcelona. He stamped his pens with "Fabricado en España por E. Wiese"

Look familiar to anyone?

Beautiful! I have something similar https://www.vintagemontblancpens.com/spanish-no-44

Great collection and very appealing web site. Good to know there are a few out there in FP land.