RARE NOS New Vintage GE 
Semiconductor Diode Thyrector surge protector  
sc4d4ab 

This is a hard to find  thyrector Resistor.  Awesome.  Get this cheap here. 

I am in the military reserves and will ship out as soon as I can, but in case I'm on duty for a few days please be patient.  

FREE USA SHIP   /   Will ship international.  

please ask questions.  Please look at pictures.