Scope 168 C belongs to rifle 71L0435. It is well documented in Clive Law's book "Without Warning" on pgs 29, 30, 31 and 52. It is a 1943 scope in a metal case and from my history notes....correct. Yours has an altered serial number. Your bracket serial number appears to be incomplete. My initial reaction is that your rifle is cobbled together.
Could you tell us where you purchased the rifle and when?
Could you post a picture of the wrist showing the scope number, the right side of the receiver ring and if the barrel is proof marked.
If it's more comfortable you can email me with you info
rgg_7@hotmail.com. Comments are posted to help folks correctly identify these rare pieces. There will be differences of opinion.