Pogo has re-released (29) previously-retired Mix-n-Match badges in World Class Solitaire today. These badges cost 12 gems each and are available until January 31st.
These badges were originally released in November 2006 and December 2016.
http://www.pogo.com/challenge/find-badge.do?searchtype=mnm&sortName=expires&sortDirection=true
(https://i67.tinypic.com/2zisjyx.png)
Tx, boss!
I only needed 2 and they were from 2013. Both were 12 gems, so I got 'em.