I collect many different themes from the 3-4th century A.D. and really like messaging of Maximinus (he is one of the great "what ifs...?")plus he had the most elaborate busts during this period.

Maximinus II
A.D. 309- 310 26mm 6.4g
MAXIMINVS NOB CAES; Helmeted and cuirassed bust left, holding spear over his right shoulder and shield decorated with two horsemen with Draco standards riding to left, four enemies below them; on cuirass, gorgoneion; on helmet, Sol standing facing in quadriga, raising his right hand in salute and holding globe in his left, around, stars and crescent, crest ending in griffin.
VIRTVS EXERCITVS; Mars standing front, head to left, resting right hand on decorated shield and holding spear in left; in field to left, lighted altar; B in right field.
In ex. ANT
RIC VI Antioch 125

Maximinus II
A.D. 310
AE follis 26x27mm 5.9g
MAXIMINVS NOB CAES; bust l., helmeted [with gryphon crest] and cuirassed with gorgon on breast, spear over r. shoulder, shield decorated with two horsemen with draco standards and four prisoners on l. arm.
SOLI INVICTAE; Sol, rad. and in long robe, stg. facing, head l., r. raised, l. holding up globe, in facing quadriga; two horses turn l., and two right; in middle B.
In ex. ANT
cf. RIC VI Antioch 144