Thanks can work with that information
First of you and others that will view this thread I first looked at any non-"black" fastback interiors and found all of the examples had matching fastback sail/upper rear and cornet panels as well as the molding matching the lower and other painted surfaces To share the production period spread, I offer the following representing pretty much the full year
7R10159x
7R1067xx
7R12887x
7R1355xx
7R1518xx
7R15854x
7R17577x
7R18710x
7R19214x
7R19536x
7R19894x
7R2039xx
7R2256xx
As for specifically blue interiors The four examples below represent cars built before and after your car. Difference in tone/tint is due to the lighting, how exposed the interior has been over the years as well as camera and monitor settings