2nd pattern, Smooth Alloy handle, Machine ground blade.
This type has for some reason been attributed in many publications as the "Polish Para" issue knife.
I showed this example to various Polish Para veterans alongside a "Standard" 2nd pattern B2, and asked the question, which type were you issued with.
In ALL instances, the 2nd pattern B2 type was selected.
Also, examples found in the area of Driel (Polish Para drop zone and entrenchment) also match the B2 issue.
So, be aware, when a smooth alloy handled 2nd pattern crops up, no matter if a Polish cap badge has been pinned to the scabbard, or a name inked on the leather, the "title" of Polish Para issue is fantasy.
Attached is an image of the 2nd pattern plain alloy handle type.