N7155U in 1991

It had LORAN, a great step up in those days: it told you ground track and ground speed and distance to any VOR in the whole country, sheer magic. 

Dual Nav-Com (one of them full of vacuum tubes) and two ILS receivers.  

An ADF which seemed to stand for "approximate direction finder."  

The 60s vintage DG was huge and must have weighed 12 pounds: I know because it failed shortly after my purchase and I took it out, replaced it with a "modern" vacuum DG.

No PC, no autopilot of any kind.  It was a handful to hand fly in IMC while unfolding a paper chart (remember those?).