Also, around 1300 the Prague Groshen became a dominant coinage in central europe due to it's high silver content. It's a fairly simple design too; the lion's body and back leg was eventually made with a single punch, the other legs, tail, and head had their own punches. I believe the mane was always constructed using multiple crescent punches, but I could be wrong (I haven't studied this particular coin in great depth.) Earlier on they used a higher number of smaller punches plus a decent amount of graver work. I'm not sure on the exact timeline, but I know Ian Cnulle has done an extensive study of this coin. He can probably fill you in on more details than you care to know.
We've made a number of SCA coins that use the same design, since the Lion is very similar to the main charge of the device of An Tir. For example, the An-Tir/West war AS 42 commemorative medallion:
<IMG SRC="http://farm4.static.flickr.com/3108/2708830172_480da34fcb.jpg">
http://www.flickr.com/photos/derianlebreton/2708830172/
This coin used the "few large punches" method for the Lion. Ian Cnulle made the die for this side.
-Donasian.
More or less no longer logging in to the AA. Have a nice life.