The first atachment is a key that exists in local keyring.
The second attachment is a file with invalid keymaterial.

OpenPGP Key
This is an OpenPGP key, which can be used to sign or encrypt emails.
Owner: | Sandro Knauß <sknauss@kde.org>
Created: | 8/15/13 8:07 PM
Fingerprint: | 39EC11A02016B72926491A06E3ADB00850605636
Hide key details| Open in Kleopatra| Import key

OpenPGP Key
This is an OpenPGP key, which can be used to sign or encrypt emails. Error while loading key: No valid key data in file. Hide key details| Import key