qatarperegrine | Coin quiz!

While sorting through our change jar, I found coins in 12 different currencies. How many of the countries can you identify? (Click for full size.)

Bonus question: which of these coins is worth most? least? :-)

I was SURE it was 20, but I found MANY sources that insisted it was 25 and there had never been 20 dirham coins.

http://www.chiefacoins.com/Database/Countries/Qatar.htm
http://en.wikipedia.org/wiki/Qatari_riyal

Since that one's no older than 2006 (it has the new Qatari emblem) it should say the amount in normal numbers on the back. Now I'm curious!