Got the first owner on the phone today, the guy was quite surprised to hear about his car 30 years later. He removed the split bench and put some black laredo high backs in, so it seems that the second owner put the beige low backs in. I solved some of this puzzle myself already. Acoording to the parts manual low back jeep seats with the cj embossing were available till 1984.
In 1980 the beige color was called Desert Beige, Linen vinyl. Trim code was
6CE or 6DE
In 1981 and 1983 the beige color was just beige and the Trim code was 6BA
In 1984 the trim code was still 6BA but the color was almond
So i start to believe that the right seat and all the other interior the jeep had when i bought it are 1980 desert beige. This was also the color the original front split bench had.
The left seat i bought as an replacment seems to be an almond 1984 then.
Also the sales brochures and paint chips look that way
Can somebody confirm?