WW2 British Spike Number 4 MKII (unmarked) Bayonet in Scabbard

Description

I attempted to clean off the rust on the attachment area and it came off fairly well, although there is some loss of the bluing in this area now (see last picture).  There is still pitting there, though.
I am not sure if there used to be a stamped label here or not, but this bayonet appears to be the exact design of the Mark II.  There is a stamp that looks like an arrow and a number 2? as shown in the second to last photo.
Total measurements 10 1/4 long by 2 inches.
Box J 06242021
Weight 13 ounces