I may well be wrong, & the views are not ideal to make a judgement, but I suspect the complete bolt has been changed. It looks as though the bolt handle knob is round, typical of post-ww2
UK mfr., rather than round with a flat as usually seen on all but very early LB rifles.
As an aside, I've found the application of the 'Maltese Cross' stamp to be somewhat variable, although the C ^ is more consistent: stamped on front body pads, engraved on bracket side, stamped onto bracket thumb screws etc etc. Note also the horizontal milling mark on the photo of the front pad - running along the top edge of the face of the pad - this is not mentioned AFAIK in any texts, but is typical of Canadian front pads, certainly of later war mfr.
