Watch List notes:

ANCIENT COINS. Roman,. A Collection Of The Coins Illustrated In Silver Heads, Royal Tales. Constantine I, The Great (AD 307-337), Silver Argenteus, mint of Treveri, as Caesar, AD 305-307, CONSTANTINVS NOB C, laureate head right, rev VIRTVS MILITVM, gateway with four turrets, PTR in exergue, 2.98g, 12h (SHRT, pp.250-251; RIC 638; RCV 15501). Broad flan, attractively toned, extremely fine and very rare.
ex Arthur Bally-Herzog collection, Münzen und Medaillen AG, Auction 93, Basel, 16 December 2003, lot 275

Estimate: £1000-1200