Teledyne Wah Chang tokens/tags

I'm looking for tokens or tags marked "Teledyne Wah Chang Albany."
These are usually circular or hexagonal, may be holed near the edge,
and are either grey or anodized in various colors. They are made out
of unusual metals such as zirconium or tungsten (marked on token). A
picture of one, with the information I've been able to find is at:
http://users.pullman.com/fjstevens/t...kens/4767.html

If you have one of these, I would be interested in hearing about it.
I'd like to find out how many different ones were made. I am also
interested in buying or trading for ones I don't have.