It is Model of 1917, M1917 for the .30-06 version made for the U.S. Army, P-14 for the original version in .303British.
The value of a sporterised example varies. Sporterised by BSA will be worth a bit more than one in similar condition sporterised by someone unknown or unheard of, which in turn will be worth more than sporterised by Bubba. Did they just modify or replace the wooden stock, or did they chop the barrel a bit and/or mill off the "ears" that protected the rear sight? If all the metal is still there it is a candidate for restoration, which may add some value. And is it still a .30-06 or was it changed to something else?