I have 3 shifters at home I forgot to ad to my notes
78D2
19D53D (same number as one in my notes but different shifter)
690511C
I thought the 78D2 was a Firebird shifter but now that I think about it, a July shifter seems late for a 1968 car build
Hard to say what Hurst was doing with the codes/numbers
with the 6-7 digit codes, some have one letter some have two
a lot of "Ds" seem to show up
I know that approximately in the early 70s , Hurst changed the numbers used on the aftermarket shifters.
They went from using a serial number to using an ID code such as 391- 4340