You have a Long Lee with it's barrel marked E for Enfield rifling.
It's the predecessor to the SMLE. They're about the same strength and are usually good shooters.
Your receiver has been drilled and tapped for that rear sight, mounted on the left side. This IMHO, makes the rifle not eligible for desporterizing.
The butt and fore stock are both of military configuration, which is likely what the rifle started life as. If there are any markings on the barrel to signify that it was ordered by a gun shop/maker, instead of being purchased from surplus, that would add some value.
There are likely holes just in front of the upper hand guard where the original rear sights used to be.
That rear sight is now unobtainium, unless you find one at a gunshow etc. The magazine is tough to come by and will sell easily in the $200 range. The bolt another $150.
You didn't get a screaming deal on this sporterized rifle but you didn't get taken either IMHO.
If it were mine, I would happily refinish that rife and bring it back to being a lovely sporter. However, I would likely replace the fore end cap, which is a cut down bayonet lug/ferrule to protect the tip and replace it with a nicely rounded or shaped fore end tip to set it off.
Some of the custom houses used horn or ebony or ivory some type of metal wood. You might also look into doing some checkering.
None of this will enhance the value much but it will certainly draw attention at the range and in the field.
If the bore isn't pitted or worn, BONUS.