Here are a couple of coins from my collection depicting Agrippina II with her looped ponytail (Zopfschlaufe) hairstyle. Claudius, AD 41-54 and Agrippina II, AD 50-59. Roman provincial Æ 20.2 mm, 5.81 g, 10 h. Lydia, Thyatira, AD 50-54. Obv: ΤΙ ΚΛΑYΔΙΟC CЄΒΑCΤΟC, bare head of Claudius right. Rev: ΑΓΡΙΠΠΙΝΑΝ CЄΒΑCΤΗΝ ΘΥΑΤΙΡΗΝΟΙ, draped bust of Agrippina right. Refs: Sear 507; RPC I 2380; BMC 22. 301, 57; SNG München 611; SNG von Aulock --; SNG Copenhagen --; Mionnet --; Wiczay --. Claudius, AD 41-54 and Agrippina II, AD 50-59. Roman provincial Æ 12 Nummia, 9.30 gm, 25.0 mm. Bosporos, under King Kotys I, AD 50-54. Obv: ΤΙ ΚΛΑΥΔΙΟΥ ΚΑΙCΑΡΟC, laureate head of Claudius, right. Rev: ΙΟΥΛΙΑΝ ΑΓΡΙΠΠΙΝΑΝ CΕΒΑCΤΗΝ, head of Agrippina II, left, in loop ponytail; BAK before. Refs: SGI 5438; RPC 1925; BMC 13.52,7; Anokhin Bosporus 348; SNG Copenhagen 31. Historical-hairstylist Janet Stephens shows how it's done: Post your coins of Agrippina II or anything relevant!