Poseidonia Coins [info Poseidonia/Paestum]
.. denomination   weights       n    description Obv/Rev                                         [Ref.]

540-510 BC Poseidonia (incuse coinage spread flan)

AR stater         6.52- 7.57   43    Poseidon/Poseidon incuse                                    [ANS2 604-18]
AR drachm         2.91- 3.87   44    Poseidon/Poseidon incuse                                    [ANS2 619-29]
AR obol           0.49- 0.60    4    Poseidon/pellet, POSEI around                               [ANS2 633]

510-470 BC Poseidonia (period between destruction of Sybaris I and II) AR obol 0.39- 0.65 6 Poseidon/Poseidon [ANS2 630-1] AR obol 0.59 1 Poseidon/octopus [ANS2 632] AR hemiobol hd Poseidon/trident [Rutter 1997 p. 57] AR quarter-obol four-spoked wheel/trident [Rutter 1997 p. 57]
470-420 BC initially flans extremely thick consequently ethnics short, later fine Poseidon in action and well-proportionated bulls AV triobol 1.36 .. Poseidon/bull [Rutter 1997 p. 58] AR stater 3.91- 8.11 82 Poseidon/bull [ANS2 645-65] AR octobol 3.52 .. Poseidon/bull [Rutter 1997 p. 58] AR third 2.46- 2.57 2 Poseidon/bull [BMC 43, Dewing 400] AR diobol 0.89- 1.43 28 Poseidon/bull [ANS2 634-41] AR obol 0.29- 0.48 14 Poseidon/bull [ANS2 642-44] AR obol 0.44 .. Poseidon /wheel [Rutter 1997 p. 58] AR hemiobol 0.22 .. hd Poseidon/wheel [Rutter 1997 p. 58] AR hemiobol 0.19 1 bull forepart/trident [ANS2 707] AR hemiobol 0.22 .. hd Athena Cor helmet/trident [Rutter 1997 p. 58]
420-405 BC 1. marked with letters or 2. shell below bull, end of marking system and letter forms from local to Ionic AR stater 6.41- 7.97 44 Poseidon/bull [ANS2 666-81] AR diobol 0.74- 1.35 39 Poseidon, spray - /bull, in ex. corn-grain [ANS2 696-704] AR obol 0.50- 0.56 2 Poseidon kneeling/PO [BMC 20, Cop 1294] bronze coins AE ... 2.40 7 Poseidon, POSE/bull l., POSEI [Grunauer I, 2.80 1 ANS 709] AE ... 1.20 1 Poseidon, POS /bull r., POS [Grunauer II] AE ... 1.50 35 Poseidon [dolphin behind]/bull charging l., octopus below [Grunauer III, ANS2 718-9] AE ... 2.70 10 Zeus, dolphin in front /bull charging l., octopus below [Grunauer IV]
405-350 BC influence and occupation by the Lucanians AR stater 6.14- 8.11 30 Poseidon/bull [ANS2 682-95] AR stater 6.49 1 hd Hera frontal/bull [Napoli, Taliercio Mensitieri M 1996, Kraay 1967] AR diobol 1.05- 1.06 2 Poseidon, thymiaterion/bull, hd down [SNG Evelpidis 243] AR obol 0.21- 0.62 9 Poseidon/bull, two annulets, dolphin or branch [ANS2 705-6] 405-390 BC bronze coins AE ... 3.32 18 hd Athena/Poseidon [Grunauer V, 2.80- 3.30 2 Cop 1323, ANS2 720] AE ... 1.80 2 hd Athena/trident [Grunauer VI, 1.33- 1.89 2 Bud I 2 308, ANS2 721]
350-290 BC bronze coins (Lucanian) AE ... 24.91 1 bull/Poseidon [Grunauer VII] AE ... 10.50-15.54 9 bull/Poseidon [Grunauer VIII-IX] AE ... 3.50 13 bull charging/Poseidon [Grunauer X, 1.19- 5.70 21 Cop 1311-22, Laf 56, Bud I 2 307, ANS2 710-7] AE ... 1.78 1 wreath/Poseidon [Grunauer XI] AE ... 1.39 2 bull/Poseidon [Grunauer XII] AE ... 15.23 1 Poseidon (or Zeus?)/bull [Grunauer XIII] AE ... 7.40 2 Poseidon (or Zeus?)/bull [Grunauer XIV] AE ... 4.21 1 Poseidon (or Zeus?)/bull [Grunauer XV] AE ... 3.50 3 Poseidon (or Zeus?)/bull, dolphin above [Grunauer XVI] AE ... 4.00 3 Poseidon/bull charging, in ex dolphin [Grunauer XVII] AE ... 2.30 2 Poseidon/bull charging, in ex thunderbolt [Grunauer XVIII] AE ... 2.30 3 Poseidon/bull, dolphin above [Grunauer XIX] AE ... 4.70 2 Zeus with eagle/bull charging, in ex dolphin [Grunauer XX] AE ... 2.00 47 Poseidon/bull charging, Kerykeion above, EY below [Grunauer XXI] AE ... 1.10 6 Poseidon/bull, Kerykeion in ex or above, [EY below] [Grunauer XXII] AE ... 3.30 5 Poseidon/bull charging, club with 5 knots above [Grunauer XXIII, Bud 309-10] AE ... 5.50 10 Poseidon/bull charging, dolphin above [Grunauer XXIV] AE ... 2.50 6 Poseidon/bull, dolphin above [Grunauer XXV] AE ... 5.50 4 Poseidon/bull charging, triskeles above [Grunauer XXVI] AE ... 2.50 3 Poseidon/bull, in ex triskeles [Grunauer XXVII] AE ... 5.50 5 Poseidon/bull charging, thunderbolt above [Grunauer XXVIII] AE ... 2.50 10 Poseidon/bull, club with 4 knots above [Grunauer XXIX] 264 BC-37 AD Paestum

Arrangements, weights and numbers are from:
Grunauer S (1973) Die Bronzeprägung von Poseidonia, in La monetazione di bronzo di Poseidonia-Paestum, Atti del III Convegno del Centro di Studi Numismatici (Napoli 1969), pp 25-45
The weights and numbers of the silver coin types have been derived from a limited number of numismatic literature.