Yep, I've got one, almost identical except that it has wood grips. The next question is that mine came from the UKicon FN rifle trials of c1956 or so and is marked down between the left and right grip X2 E1 3885 (presumably the serial number) and the scabbard has X1E1 engraved on top of the mouthpiece.

Are these wood gripped or ex trials FN bayonets rare