Really cool reverse on that coin and outstanding write-up! I hope it gets chosen as a featured article!
Here's a Gordian III with Athena, but alas, no anguipede giants or combat. Gordian III, with Tranquillina Roman provincial Ӕ tetrassarion; 29.7 mm, 11.34 g, 7:00 Thrace, Anchialus, AD 238-244 Obv: AVT K M ANT ΓOPΔIANOC AVΓ/ CEB TPAN/KVΛΛINA, laureate and draped bust of Gordian right, facing diademed and draped bust of Tranquillina left Rev: OVΛΠIANWN AΓXIAΛE/WN, Athena enthroned left, holding patera and scepter; shield at base of throne Refs: AMNG II (Strack) 662 var. (obv. legend); Moushmov 2937; Varbanov 750 var. (obv. legend) Notes: Coin is an obverse and reverse die match to the following coins: lot 275, CNG e-auction 352, June 3, 2015; lot 1307, Peus auction 369, Oct 31, 2001; lot 1775, Gorny & Mosch Giessener auction 241, Oct 10-12, 2016.