SMLE No4 MkII

I picked up this #4 and aside from the obvious DOM stamped on the side am pretty well clueless as to where it was made and where it went. Long shot and close up of the receiver -

A few other close ups -

I've read that "PF" designates Fazakerley post 1949, but my "Irish Contract" of 1955 doesn't carry the stamp.

All the serial numbers match, including the magazine. No import mark.

Any info appreciated -