No.4 (T) for $20 build thread

[Surpmil]

Looks like you've got one of the NOS Long Branch cheekrests there which used to be floating around in the Canadian ordnance stream as late as the 1990s I'm told. They lack the mysterious and inexplicable front profile of the UK examples - a mystery no one has ever explained to my knowledge what use those concavities were or why the larger one was on the left side to apparently suit the needs of lefties, rather on the right side where it would have made a proper grip on the wrist easier for most shooters! Apparently LB couldn't see either as they dropped them.
If I was you I would do what some users did as early as WWII: move the damn thing back so the front edge is aligned with the end of the grip so you can actually get your hand around the wrist of the butt properly.