The Mekons - Ancient and Modern (mostly early 50s)
Richard Thompson - The Old Kit Bag (age 54)
Pick your favorite post-2009 Pet Shop Boys album (Electric for me, but none are bad)
Tom Waits - Alice (age 52) is one of his better albums (which means I only kind of hate it)
Yoko Ono - Between My Head and the Sky (at least I remember this being pretty good) (age 66)
Nancy Sinatra's self-titled album (age 64) is pretty good. Petula Clark's 2013 album (age 81) got some good press, and had a pretty good single.