HELENA, mother of Constantine I. AR Third Siliqua (1.17 gm). Struck circa 11 May 330 AD. Constantinople mint. Diademed and draped bust right, wearing necklace of pearls / Large K within beaded border. RIC VII -; cf. Mazzini V pl. XXXVIII, 287 (Constantine II); RSC -. Toned, superb EF. Extremely rare. ($2000) Probably a donative issue struck for the celebrations dedicating Constantine's new capital city in May 330. Triton V Sale, 16 Jan 2002, lot 2173. Lot sold for $1750, plus buyers fees. By permission of CNG, www.cngcoins.com.