I searched through last months (February 2018) auctions to try and find you the best of the oldies.
Model : Toyota Celica TA22
Year : 1973
Engine : 18R-C (88,000km)
Sale Price : $12,000
Overall Grading : RA
Interior Grading : B
Exterior Grading : B
Model : Nissan GS31 2by2
Year : 1977
Engine : L28 (85,000km)
Sale Price : $9,667
Overall Grading : R
Interior Grading : B
Exterior Grading : B
Model : Nissan Skyline KPGC-10 GT-R
Year : 1971
Engine : S20 (9,000km)
Sale Price : $45,248
Overall Grading : R
Interior Grading : B
Exterior Grading : C
Model : Mazda RX7 Savannah
Year : 1978
Engine : 13b(90,000km)
Sale Price : $7,619
Overall Grading : 3
Interior Grading : D
Exterior Grading : E
Model : Nissan Skyline GC-10 2000-GT
Year : 1972
Engine : S20 (42,000km)
Sale Price : $21,619
Overall Grading : R
Interior Grading : E
Exterior Grading : C