Ladies and Gentlemen, fellow Knights and other Darksiders, Honoured Guests, Lurkers and Visitors... this is my second contest.
1. The aim is to identify the country of origin of as many of these coins as you can.
2. The contest shall be open for one week from now. If by the end of that week, no-one has found all the correct answers, the winner shall be the first person to send in the highest number of correct answers. On the other hand, if anyone gets all the answers right, they win and the contest is over then and there.
3. Send your answers to me by e-mail. Because my e-mail program sorts mail by "Your Time Sent" rather than "My Time Received", you must "lock in" your answers by simultaneously posting a brief note here, along the lines of "Sap, you've got mail". Do not post your answers in the Forum. New forum members, you are welcome to participate, but be advised you may not yet have permission to send me a Forum e-mail; if this applies to you, post a note here saying so and contact Bobby or the other Forum staff to help you out.
4. You will not be informed of how well you did until the contest is announced to be over. If, after you send me your answers, you wish to add to or correct your answers, you may do so. Only the final answers received will be accepted.
5. In the event of a disputed result, a tie-breaker round will be set.
6. Half-points for "getting close" to the answer I'm looking for are awarded at my discretion.
7. There are 20 coins, only one side of which is shown. The contest is "open book" - use whichever resources you need to complete it. Some hints are found at the bottom of the post.
Let's go!

Coin 1:

Coin 2:

Coin 3:

Coin 4:

Coin 5:

Coin 6:

Coin 7:

Coin 8:

Coin 9:

Coin 10:

Coin 11:

Coin 12:

Coin 13:

Coin 14:

Coin 15:

Coin 16:

Coin 17:

Coin 18:

Coin 19:

Coin 20:

Hints:
- No "German States" - you can safely ignore that section of the Catalogue.
- No "Chinese Provincial" (Republic or Empire) - that section may be bypassed as well.
- Unless the forum is resizing them, all coins are to the same scale - small pictures are small coins.
- There is only one of them you won't find in the 20th century Krause. It should be obvious which one that is.
[Edited the last hint. Had one too many pre-1900 coins there. Sorry.]
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis