I cannot find any info on my old Guild.......which I bought new in 1970......I do have the original Guild folding brochure with purchase date....model m75.......ser#DD 505......can't find any of this, except on the missing 1969 years......including George Barnes Model (I own a flyer with him playing this type of guitar).......I will try to post a pic.......my guitar is very worn......with many years of joy......now for my question.....why would "it" have a starfire truss rod cover (metal).......it has no f-holes......looks nothing like those....to me........this guitar has never been out of my sight.......even during two fret jobs........can anyone help me out.......important fo me to know the value for insurance purposes and/or down the road selling.....I am 77 years old.......and nobody else in the family plays..................thanks to this forum and thank you for the help