It's marked 1943 right below the III* HV stamp on the right hand side just above the sling swivel well a little to the right of it. it also has an MA and under the wrist t has an R and a SLAZ and a 49 below it I think. I have put together alot of rifles and theres no question it is an engineering marvel.
Anyone have any Idea what a good to fine condition MUES No 1 improved is worth while were at it.