Round Back Alternator Rebuilder

Mattax said
Yours is original to the car, right?
Ask they don't sandblast it. Ruins the surface appearance and obscures the date codes etc

Unfortunately not. My dad's log book entrys go like this:

1978 137940 miles
1980 163177 miles
1981 188500 miles
1990 291026 miles
2018 316151 miles

All my cores are well sandblasted, all but one which is a 65.