LM312D single Op-Amp in a 14 pin white/gold cerdip package by National Semiconductor.
***** Please note NOT the modern 8 pin surface mount LM212D *****
This is offered purely as a collectors item, and comes "as is" and intended for that display cabinet.
Status: salvaged item due to rarety. condition: used appearance: Gold top, base plate and pins with white ceramic body.
Towers states this in 1979 as being a "SBA" or Super Beta Op-Amp: Vs+ max +18V , vs- max -18V