Constantine I (307/310-337). Æ Follis (24mm, 3.92g, 6h). Londinium, AD 310. IMP CONSTANTINVS P AVG, Laureate and cuirassed bust r. R/ MARTI CONSERVATORI, Mars standing r., holding shield resting on ground with l. hand and reversed spear with r. hand; T-F//PLN. RIC VI 118 var. (obv. legend). Rare, near EF