Pls help id this nos ignition cylinder/key

The lock cylinder is for a '70-up tilt column. Yes, the tag is the code for cutting the key.
Yep.
1970 to 1985 Mopar all bodies with tilt steering.
EP1594 is the key code. I have a book that will use that code to decipher the cuts on the key.
I never understood the reasoning behind "record and destroy". You already have the code stamped on the tag. Put it away someplace safe.