BITHYNIA. Nikomedia. Maximus, as Caesar, 236-238. Tetrassarion (Bronze, 24 mm, 6.59 g, 1 h). Draped and cuirassed bust of Maximus to right; redenominational countermark of Δ within circular incuse punch. Rev. ΝΙΚΟΜΗΔΕ/ΩΝ ΔΙϹ ΝΕΩΚΟ/ΡΩΝ Two hexastyle temples facing one another, both from a three-quarters view. RPC VI, 3455 (temporary). SNG von Aulock 798-9. For c/m, Howgego 788. Extremely rare, with only four examples known to the RPC Online. Countermarked, otherwise, about very fine.