Its a natural, just yellowed over time i guess. First owner had it in a stand in his flat, so i guess light does it eventually. The possibility of it being late 87 is down to knowing the time of purchase being 88. If i go to the shops here in finland now, the new guitars in the shops will be manufactured at most a couple of years and at least a year ago. I mean, the stuff sent way over here has had the tendency of being last years goods. (Even more so decades ago, a friend bought a ´64 bassman head in ´70 as a new one and got it cheaper because it still had "old cosmetics")
Around early 88 seems as accurate as we´ll ever get without the serial. Happy about the large rout, pots might be traceable (and serviceable).
I´ve liked this guitar a lot and will probably try to find out which one´ll last longer, the guitar or me.
I´ll post pictures and details of another, also natural, S/N 880603292 living in a town nearby owned by a friend of mine on Sunday when he comes to visit. He´s a guitar collector with tens of guitars and will probably think I´m crazy to ask him to bring the only model he´s got I also own. "Why cant I bring the non-reverse firebird???" "I wanna photograph the epi!" "Cant you photo your own??"
<edit> Oh yeah, I forgot, lets all weigh our guitars, also would be of interest to know the weight of later korean and even chinese models. What is the smartest way to weigh a guitar in normal domestic context?
<edit2> stupid question, with a scale! mine´s 4.0 kg.