This issue is a variant of Green Lantern (DC, 1976 series) #173 [Direct Edition]. There exist further variants.
Carol Ferris and the Earthbound supporting cast return to the strip. Bruce Gordon (Eclipso) is part of the new supporting cast. Non-advertised, Pre-Crisis of Infinite Earths mini-series five-panel-sequence-cameo with The Monitor (Only hands shown w/voice), and Lyla [Harbinger]