Watch List notes:

Diadumenian (217-218). AR Denarius (20mm, 2.68g). Rome, 217-8. Bare-headed and draped bust r. R/ Diadumenian standing l., holding baton and sceptre; two standards behind. RIC IV 108; RSC 14a. Scarce. Cabinet tone, die break and flan defect on rev., otherwise about EF