[DeTomaso] Rockers

[Mark McWhinney]

I pulled my valve covers off.  I had not had then off in the six years that
I have had the car, so I was curious about what previous owners had done
there and the condition of things.  (Yeah, I know.  I should have done it
years ago, but you have to really earn the rank of Slacker PFC.)

It looks pretty clean, and there is no obvious sign of problems.

Rockers:
http://portata.com/panteraadventure/images/valves.jpg

Valve cover:
http://portata.com/panteraadventure/images/valvecover.jpg


I found these markings.  Can anyone tell me what they mean?
http://portata.com/panteraadventure/images/headmarks.jpg