I am not a rover expert - but lights on the fenders is Series III - always possible it has a later front end on it but it all looks original.
From Wikipedia:
https://en.wikipedia.org/wiki/Land_Rover_Series
The Series III had the same body and engine options as the preceding IIa, including station wagons and the 1 Ton versions. Little changed cosmetically from the IIA to the Series III. The Series III is the most common Series vehicle, with 440,000 of the type built from 1971 to 1985. The headlights were moved to the wings on late production IIA models from 1968/9 onward (ostensibly to comply with Australian, American and Dutch lighting regulations) and remained in this position for the Series III. The traditional metal grille, featured on the Series I, II and IIA, was replaced with a plastic one for the Series III model.
The larger amber front blinker lights and the side reflectors / marker lights makes it look like a USA model (perhaps?)... at least they are good clues as to the year.
Good Luck with the acquisition...