Ancients
BITHYNIA. Calchedon. Ca. 387-340 BC. AR tetradrachm (or stater?) (23mm, 15.12 gm). NGC AU★ 5/5 - 4/5. KAΛX, bull standing left on corn ear right; ΠM monogram in left field / Quadripartite incuse square with stippled surfaces. BMC Black Sea 93-99. Waddington, Recueil Général 14 var. (monogram). SNG von Aulock 486 var. (same). SNG Copenhagen 351 var. (same). Boldly struck, with areas of toning throughout.
Ex Prospero Collection (The New York Sale XXVII, 4 January 2012), lot 433; purchased from Spink & Son Ltd., London (4 June 1989)
https://coins.ha.com/itm/ancients/greek/ancients-bithynia-calchedon-ca-387-340-bc-ar-tetradrachm-or-stater-23mm-1512-gm-ngc-auand-9733-5-5-4-5/a/3089-32092.s?type=CoinArchives3089
HID02906262019
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Estimate: 1500-2000 USD