Just saw this listing (I already have mine). These are quite rare: https://www.ebay.com/itm/National-Semi-LM323K-Neg-Regulator-Gold-Over-Steel-TO3-MBD002C/392498146977?epid=13006181132&hash=item5b62b66ea1:g:LmIAAOSwkYldsd23
Not correct date code, but still very nice!
Well, that did not take long to sell. I hope someone from this group nabbed it!
What is one worth with the correct date code?
Just be carful and test any used or NOS LM323k. That package when it goes can actually short full voltage. Seen more than a few of them so I have a test rig based on the data sheet before I ever try them in an actual machine.