What happened?

[Colorado Osprey]

There is a sticky link on this thread "Headstamp codes/Guide", but there is nothing there.
What Happened?

Anyone be interested in this info?
Here's a link:
http://cartridgecollectors.org/headstampcodes_bottom.htm
It's pretty thurough.

[mr_will]

I think im goin to borrow work resources and print that out :D
thanks I have some cases that I didnt know what they were