How to delete superceded self signatures?

[Johan Wevers]

Hallo,

When I check my own key, I see this:

vulcan:~> gpg --edit-key 9E8C5DDF
Command> check
uid  Johan Wevers <johanw at vulcan.xs4all.nl>
sig!3        9E8C5DDF 2005-06-03  [self-signature]
sig!         434ABDAD 2000-08-11  Zenon Panoussis
sig!         FB64FCB3 2000-08-20  <eric at terra.hacktic.nl>
sig!         D96CE99D 2000-08-20  Eric Veldhuyzen <eric at terra.nu>
sig!         05C6DB7B 2001-02-22  Karin Spaink <kspaink at xs4all.nl>
sig!         0D751CE3 2002-10-15  Lachlan Mann <Lachlan.Mann at Oracle.com>
sig!         4699CDCE 2002-10-29  Lachlan R Mann <Lachlan.Mann at oracle.com>
sig!3        9E8C5DDF 2000-08-11  [self-signature]
sig!3        9E8C5DDF 2000-08-11  [self-signature]
sig!3        9E8C5DDF 2000-08-11  [self-signature]
sig!3        9E8C5DDF 2000-08-11  [self-signature]
uid  Johan Wevers <johanw at xs4all.nl>
sig!3        9E8C5DDF 2005-06-03  [self-signature]
sig!         FB64FCB3 2000-08-20  <eric at terra.hacktic.nl>
sig!         D96CE99D 2000-08-20  Eric Veldhuyzen <eric at terra.nu>
sig!3        9E8C5DDF 2000-08-11  [self-signature]
sig!3        9E8C5DDF 2000-08-11  [self-signature]
sig!3        9E8C5DDF 2000-08-11  [self-signature]
sig!3        9E8C5DDF 2000-08-11  [self-signature]
1 signature not checked due to a missing key

I want to delete some of these self signatures. (probably 3 of the 4 on the
creation date are useless anyway). I see 4 signatures dated on the creation
date of the key. I'm not sure how I got them; do you get a new one if you
change your preferences list (yesterday I added bzip2 as supported
compression algo, the upper selfsig shows that date)? I want to export the
key clean, but keep the signatures of the other people who signed it.

-- 
ir. J.C.A. Wevers         //  Physics and science fiction site:
johanw at vulcan.xs4all.nl   //  http://www.xs4all.nl/~johanw/index.html
PGP/GPG public keys at http://www.xs4all.nl/~johanw/pgpkeys.html