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Decoding GM window glass

977 views 2 replies 3 participants last post by  Farm Boy 
#1 ·
I have hundreds of GM muscle car door , quarter and rear glasses. Removed in the 80's and 90's. Each marked with unintelligible scribbling on the faces. There are permanent markings on each, But I have never found any guidance on how to decode any of those numbers. Any one have any documentation for these? Thanx in advance
 
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