What on Earth is this, at 1320 E. Colorado?

For years a gentleman has been calling asking me if I've had a chance to look at the stone monument in front of the McDonald's at 1320 E. Colorado Blvd., in the first block to the west of PCC. He wanted help in figuring out what it means.
I had not had the chance.
Until today. Here it is. As you walk up to it in the curb strip, it looks like nothing so much as a gravestone. It is in the ground extremely solidly. It must be from the ... '20s? That part of Colorado was, excepting the then PHS/PJC campus, a little bit country back then. Amazing that a car has never hit it -- or maybe the monument has always won.
Is FB for some kind of fire brigade? Is the top a circled No. 11 or some other kind of symbolic marking?
Is this the work of aliens or of Pasadena pioneers? Did McDonald's try to get rid of it and give up?
These are questions I seek your help in answering.
.
Comments
It's a highway marker from way back. It was discovered during excavation for that McDonald's. FB stands for Foothill Blvd., 11 is the distance from downtown Los Angeles. 220/222 indicates something else I'm not aware of. The story was in the Star-News a few years back.
Posted by: Jim C. | June 17, 2009 8:24 PM
Specifically, it's a mile marker for Route 66.
Posted by: Ann Erdman | June 18, 2009 11:24 AM
also check the East Colorado Boulevard Specific Plan, City of Pasadena, pg. 23
http://www.ci.pasadena.ca.us/planning/ECSP/chapter8.pdf
Posted by: linn wyatt | June 18, 2009 9:26 PM
Funny even Larry doesn't read his own birdcage liner.
D.
remaining anonymoose so snark about me all you want Larry...
Posted by: Dormitas | June 19, 2009 11:07 AM
If Larry's stuff is the birdcage liner, your's is the crap Dormitas.
Posted by: anon | June 21, 2009 8:22 AM