Hmmm....Probably my Quad II amps in the vintage system, refurbished by the late Bill Thalmann, from 1959 and 1961 with top tier glass (GEC KT66s). I have some gear like Technics SP-10 that I bought in 1973- running in my vintage system- restored by Thalmann, an ARC Dual 75a that I bought new in 1975- not in service, but I have a full tube complement that I bought years ago- needs a recap. My Quad '57s are from 1973, I bought them in 1974, restored by Kent McCollum, running in my vintage system. Old Decca Ribbons- I'm not sure how old, probably from the '60s, need work.
I got rid of a lot of gear I wasn't using a decade ago. Had some nice pieces, an ARC SP-10mkii, among other things.
My main system is relatively new- circa 2006-7. Lamm ML2s are really the center piece, driving a pair of Avant-garde Duos. The rest is from the same period, roughly speaking. A few Koetsu stones--now a rare commodity, given the death of the original company.