Although that is almost definitely an E4 it has the 'wrong' chainstays, they should be much deeper than that and the drive side dropout is different too. It would be interesting to know the frame number, because I'm wondering whether you have a pre-production frame.
Hi frame number looks like G39300068 hope this helps to i.d the frame.
That seems to be the opposite way round to any of the other Orange frame numbers I've seen.
Mine is : MT80600456
The 806 identifies the date of manufacture as June 1998 with 456 being the production number for that year.
It's just a guess, but yours would appear to be June 1998 (068) but 63 frames (393) earlier then mine.
That's all just an educated guess though.
The E4 wasn't introduced until 1998. (The E3 was still on sale for 1997) so I can't see it being earlier. I do know that Team Orange got first pick of the frames and that it's likely that there were mid run design changes.
I wonder how many were actually sold? I've only ever seen one other and that was next to mine in the shop when I brought it.
WANTED: 1995 18" GT Zaskar Fame in ink blue | USE Stealth forks or spare parts