Okaaay, that's been a while since this was updated.
I thought we could zoom in on date markings for these.
The post itself is clearly of Mo-Yr. Mine are 1-67 and 2-67 for an early March car.
I lost track of which of these latches belong on my car, but I think it's the upper pair.
The latch has its date pretty well hidden within the rotating catch well.
Jeff does not have a section for dates on latches in the library and my search-foo is weak today.
Here are of my dates which leads to believe these are Yr AlphaMonth AlphaShift.
I'm thinking the year and month are correct and don't have any of these past D on the last letter.