Philco 48-2500 Projection set

[Eric H]

Looking for some info on this set.

There is a number 483 stamped into the top rear edge of the cabinet, is that the cabinet model or the serial number?

How many of these sets were made?

The round plastic cover that goes on top of the barrel and around the neck of the CRT has 4 small lines etched into it at 90 deg intervals, what are these for, some type of adjustment I presume, and do they show up on the screen?

I've been thinking of fixing mine instead of parting it out, (yes, it's really hammered ) spent some time this week cleaning the chassis and projection assembly and it all looks pretty good.

Eric