Replacement barrel- Norwegian? or ?

[DonVoigt]

These markings, E over PS are on the barrel of a 1940 Mauser P 08.
The receiver/frame match, but the barrel is replaced and the toggle is a mismatch, but also Mauser S/42.

It has been suggested that this is a Norwegian replacement, which could be - the pistol did come with a Norwegian modified holster.

I was also suggested it could be post WWII Porutguese.

Any info/comments/ ideas?

thanks.