In this discussion of difficult corks (by the way, knocking off the bottle
top seems like a reasonable final method; it can be done also with a sword,
by someone _very_ good, though so far I've seen no one under 60, or US-born,
show that knack) I couldn't always tell if the corkscrews were of helix or
"drill" kind, but I'm gathering they were all helices. (A "drill" has a
solid core, and tends to split corks. It's a very old point that I hope is
in the FAQ already, like second or third pph.) Screwpull-type openers are
especially effective helix types because they have a wide diameter (at least
the ones I've seen).

I also was interested in Mr Broadbent's time machine (or maybe it was a typo
or maybe just a revised edition :-) :
"cwdjrxyz" wrote :
> ...
> In a 1982 book, Michael Broadbent says he had tasted 1959
> Margaux many times over the years and had 29 tasting notes.
> His last note in the book was in Dec 2001.

Broadbent's _Great Vintage Wine Book_ (1980), touted when it appeared
because of Broadbent's range of tasting experience in his job, only has
notes on that wine to 1977, citing "a dozen notes since 1964."