1966 Barracuda Speeding Ticket
Well these old cars can be pretty quick and you were not at zero miles an hour when you came around the turn.
If you feel the speed was not 75, then if you can get time off from work, go to court and say so.
I know here there is un formal and formal hearings, the later is with the DA but maybe they can have some leeway in un formal hearings now-just guessing.
All you can do is fight the ticket and tell the truth in court
When I used to get tickets, I fought most every one unless they cut me a good break