CNG - Crispus. Follis. CAMP PLAN. Rare $227.50 Aug-23-00 Crispus, Caesar. 319 AD. Æ Follis (2.53 gm). Thessalonica mint. Laureate and cuirassed bust right / VIRT EXERC, Sol, raising right hand and holding globe in left, standing half-left in center of plan of Roman camp; TS•E•. RIC VII 69. Fine, dark green patina. Very Rare. 721736 The true meaning of this reverse type has never been fully deciphered, the latest theory being that the X shaped pattern represents Constantine's vision before the battle of the Milvian bridge. This does not seem likely since the type is known on coins of Licinius, a pagan and Constantine's enemy.