Watch List notes:

The Roman Empire
Geta caesar, 198 – 209

Seven portrait types were identified for Geta, spanning the period between his nomination as Caesar and his assassination late in 211. Initially his portrait evolves in parallel to his brother Caracalla's portrait types, albeit with delay, from child to a mature man. After the death of their father both brothers were appointed Augusti. During the turbulent animosities from 211 up to his murder, Geta as augustus develops his final seventh portrait type with a long forked beard and a clear resemblance to his father Septimius Severus, while Caracalla's portrait does not change. In my opinion, Geta used this similiarity in portrait style to his father for his gain in the struggle for power. AMP.

Denarius 198-200, AR 3.68 g. L SEPTIMIVS – GETA CAES Draped bust r. Rev. FELICITA – S – T – EMPOR Felicitas standing l., holding caduceus and cornucopiae. C 44. BMC Severus 144. RIC 2.
Extremely fine
Ex Gitbud-Neumann sale 26, 2014, 641.
Geta as caesar shown as child. His name is still L. Septimius Geta. AMP.