We throw around the term "vintage" quite often in this hobby - vintage blades, razors, soaps....
Here's a nice definition (second def from Mirriam-Webster online):
of old, recognized, and enduring interest, importance, or quality
what catches my eye here is the "enduring interest, importance, or quality" aspect. Penhaligon's tallow-first English Fern and Blenheim Bouquet soaps (and BB tallow-5 as well) easily meet this definition - and because they are produced no more, "vintage Pen's shaving soap" will be understood by all here to be the tallow product, even though "old" is a relative term. There's "old Pen's" and "now Pen's," isn't there?
Vintage Williams is different from new Williams; old Colgate from the new (and no-more) stuff.
For what it's worth, I'm just wrapping up an old-soap buying spree - paying too much for too many, I think (but how else will I get 'em?). I'm stocking up - retirement approaches and I'll have plenty of time to lather, but less $$ to acquire stuff....
My question to fellow shaving soap fiends: Does anyone want to see reviews of soaps that aren't readily available anymore? Will anyone care? I've come across some pretty obscure soaps, too (my thanks to Jim for the Corvette's and Morning Pep, to BobK1 for a puck of old Colgate in wax-paper). Does anyone other than I care how Whisk-Off performs? How about Roger & Gallet L'Homme? (How about... Houbigant Fougere Royale?)
If there is any interest in my opinions on obscure shaving soap, I will try to hone my reviewing skills and report on the old stuff as I try it out. (HONE my skills, get it????)
Oh, yeah. I'm still looking... you could PM me if you have any interesting prospects you'd consider parting with!