Pics and text courtesy of
Some detailed close up pictures of a NOS assembly line Dearborn Starter Solenoid. Ford part number B6AZ-11450-A SW-3.
These were found on the Dearborn 1970 Boss 302’s but not sure what solenoids were used at other factories.
The 69's may have used a round heavy duty type solenoid.
CAD AND ZINC DICHROMATE HARDWARE CRUSHED WASHER
RED PAINT DAUB
DATE CODE CLOSE UP 9LA
20,000 ORIGINAL MILE SOLENOID