A good line drawing can be as good as a photo for die-matching! Germanicus, 15 BC - AD 19. Roman Æ as, 11.18 g, 27.5 mm, 7 h. Rome, issued under Caligula, AD 40-41. Obv: GERMANICVS CAESAR TI AVG F DIVI AVG N, bare-head of Germanicus, left. Rev: C CAESAR DIVI AVG PRON AVG P M TR P IIII P P around large SC. Refs: RIC 50; BMCRE 74-78; Cohen 4; RCV 1822; CBN 123. Note: Reverse die-match to Henry Cohen, Description historique des monnaies frappées sous l'Empire Romain, Tome I, Paris, 1880, page 225, no. 4. Here's the listing in Cohen, which is thankfully illustrated: I do not believe the obverse is a die-match, but I'm quite confident the reverse is, because the letters in the inscription are absolutely superimposable: I suspect the coin has been subjected to some smoothing, resulting in the loss of the centration dot where the die-engraver used a compass to lay out the circle in which the design was placed and the compass point left an indentation in the die. Post anything you feel is relevant!
Cool! Superimposing the images to check for a die match is much easier when one of them is a line drawing. Definitely a die match . I have a similar coin which was part of a large mixed lot purchased in 2013. Germanicus assassinated October 10, 19 AD struck 42/43 AD under Claudius, Rome mint AE As, 30mm Obv: bare head right; GERMANICVS CAESAR TI AVG F DIVI AVG N Rev: TI CLAVDIVS CAESAR AVG GERM P M TR P IMP P P around large SC Ref: RIC I 106 (Claudius); Sear5 #1905; Cohen 9; BMC 241