Not getting 12 volts to coil

This a 50 yr old car. Who knows what electrical accessories have been added & connected to the ign cct. This might explain the 2v voltage drop.

The simplest thing you can do now to eliminate voltage drop as a problem is this:
disconnect all wires connected to the coil [+] terminal. Run a jumper direct from the coil [+] to battery [+] terminal. If the car starts & runs ok, then you have a voltage drop issue. One thing at a time, report back.