There might be a legible label on the voltage regulator???
IF it was converted to 12v correctly... it will have 4 terminals on the starter solenoid instead of three... and a ballast resistor inline to the ignition coil.
Here's an info page (written for '55 T-Birds) that should give you a very good idea.3 post solenoid
is it a big deal to convert to 12v
half inch ratchet broke it free
6v head light
what class is Victoria Crestline
it has power assist steering , auto trans, 2 dr ht
....... 2-dr hardtop with the glasstop and all the bells and whistles including power windows and 4-way power seat. Beautiful car. It is still around here somewhere but it never comes out until 4th of July parade.
54 Canadian cars still had the flathead and kingpin front end.