In 2010,I inherited my Dad's 5thAve when he expired. I drove it for 9 months, but never appreciated it. After that, it sat on my corner lot for three years, with no takers.
Besides the de-laminating cloth everywhere, it was pretty minty. And the leather seats were truly very comfortable. But it was IMO, the ugliest gold/tan/bronze color ever.
I sold it in 2014 for $550, the value of the very low mileage tires on it,which Dad had installed just weeks before his death in 2010.
Dad purchased that car as a 3-year old,IIRC and really loved it.He was always bragging on the ride, the comfort, and the 25mpgImp it would regularly return.I guess that would be 20-USmpg.