Sounds interesting. Shame about the varnish though.
If I don't say it then someone else will: Can you get some pictures? Makes it a lot easier to tell when you can see the various parts and how they have been stamped. However, you could describe where on the right side it is stamped (Under the year and MK, or above the crown, or off to the side, or even right over the top of the crown and whatnot?).
Also an all matching rifle is pretty neat at that age. Does the year on the barrel match the action?
I'm pretty new here too and don't know much but good to see another Lee Enfield in good condition. I hope you'll look after it haha.