NICEPHORUS II Phocas. 963-969 AD. AV Histamenon Nomisma (4.35 gm, 6h). Constantinople mint. Facing bust of Christ; two pellets in arms of nimbate cross / Facing busts of the Virgin and Nicephorus, holding patriarchal cross between. DOC III 4; SB 1778. Good VF. ($500) Nicephorus II introduced the first change in the Romano-Byzantine gold coinage system since the introduction of the solidus by Constantine over 600 years before. He produced two gold coins of identical type: the traditional solidus, now termed the histamenon and the tetarteron ("tetartron"-less a "quarter" of a tremissis in weight). Taxes had to be paid in histamena, disbursements were paid in tetartera. The confusion forced a change in the types of the tetarteron, which however remained in use until Alexius I reformed the coinage again in 1092. $600.00 Aug-09-01 Seller hjbcoins, Harlan J. Berk.