Phil's glass markings are simply the glass manufacturer's logo and brand name for their laminated glass, which was supplied to the GM plant. LOF stands for Libbey-Owens-Ford (not THAT Ford), which was a glass manufacturer back in the day. I'll have to look at the glass from my truck and see if they have any markings. I suspect that not all AD trucks had glass with markings on them, but can't prove that. Here's a pic of an LOF advertisement that's for sale on eBay. I stole it just for the information.
Is there such a thing as safety glass etching stencils available for the AD trucks with replacement glass?
I think it would have to be a DIY thing. I have not seen anything available from any vendors.
