[Buddha-l] Korean Sanskrit Writing

[Jayarava]

An internet buddy has shown me some pics of what seems to be a Korean form of Siddhaṃ writing. Some of the characters I can read, but others are a mystery. It could be a mantra, or maybe just a string of bīja. Does anyone here know anything about Korean Siddhaṃ or something similar?

The pics are here if anyone is interested:
http://flickr.com/photos/parrhesiastes/tags/sanskrit/

There's also a Chinese form of writing Siddhaṃ (or perhaps Lantsa) which I have copied here for a couple of bīja: 
http://www.visiblemantra.org/hrih.html 
http://www.visiblemantra.org/hum.html

Best Wishes
Jayarava