Epoch Galaga X6 (1983, VFD, 4 C Batteries, Model# 8910)
Game play is a lot like the surface and trench stages from Atari's Star Wars arcade game. This game has seen many different incarnations, here are the ones I know: Grandstand Firefox F-7, Epoch Astro Thunder 7, Epoch Galaga X6, and Radio Shack Astro Thunder. There may be more, I'll add them as I find them... :)
Do I have this? Yes, loose.