Is there a way to see what patches have been installed ?

The reason I ask is that this morning, I saw that 2 were available. I think Opensuse 2013-651 and 652.

I was excited about 652 because it had to do with Thunderbird which is causing me grief.
Within Yast, I picked the 1st to look at and accept. It had to do with samba.
Anyway when I went back to look for the 2nd, it was not there.

Did it get installed anyway, and how can I check ?