U3516/2 Silicon NPN transistor - SGS

U3516/2 Silicon NPN transistor by SGS.   

Package: TO-5 with long gold plated leads and base.   

Status: NOS (New Old Stock) - House Coded *

Individually tested components: YES   

RoHS compliant: no   

* This part number presumed to be a house code, listed as someone, somewhere will be looking for these !   

any information appreciated.