Ineluctable modality of the past, indeed.

A lot of history in GPG keyrings...

$ gpg -k

...

pub   dsa1024 2003-08-08 [SCA]
      5E69659A734629663FBF04EB166C3B2362DBF2F4
uid           [ unknown] Hans Reiser (created on laptop) <reiser@namesys.com>
sub   elg2048 2003-08-08 [E]

pub   dsa1024 2003-12-01 [SCA]
      86EFEB4D2AB605B5E3549F69A3F4319719FEDF80
uid           [ unknown] Nina Reiser <ninasha@namesys.com>
sub   elg2048 2003-12-01 [E]