Its either a No 1 of some type & therfore a
Short
Model
Lee
Enfield, or its a No 4, in which case it is not an
SMLE. Not trying to nit-pick but it might affect the value as the 2 different versions both have unique features which relate to value.
Easy way to tell? Look at the muzzle. If it sticks out about 2" it's some kind of No4, if its flush then its some kind of No1/
SMLE. Usually the stampings on the reciever wil actually say the model, mark & * or non-* version.
What to look for?
General condition, including inside the bore. How many grooves 2, 5 or 6?
Matching numbers. There should be several. Reciever (either on the wrist metal or the flat left side reciever wall (depends on the model, they were re-located.) Bolt (stamped on the back, flat surface of the bolt handle), forend wood, Magazine & maybe the metal forend cap if its a No1 SMLE, the No 4 doesn't have the cap, just a sheet metal cap.
Bolt head number if its a No 4.
Headspace.
No1 or Short Model Lee Enfield:
No4 Mk1 lee enfield:
There may be minor differences from the images, things like sights were made in several variations.
The devil is in the details, even which factory made it could affect value! I'd price a run of the mill, all matching good condition one at between $350 & $550 depending on the details.
If the wood has been drastically cut back, the barrel altered & so on its a "Sporterised rifle" these vary in quality from nice gunsmith made legitimate rifles to "
Bubba's Shade Tree Gunsmiffin' & Siding co" hack jobs. Value of these is drastically reduced for the most part. Say $100~150 depending on condition & quality of work.