Watch List notes:

Constantine I 'the Great' AV Solidus. Treveri, AD 314-15. CONSTANTINVS P F AVG, laureate head right / RESTITVTORI LIBERTATIS, Roma, holding sceptre in left hand, enthroned right, shield at side, handing globus held in right hand to Constantine in military attire, standing left, extending right hand to receive globus and cradling parazonium in left arm; PTR in exergue. RIC 25 var. (rev. legend breaks); cf. Alföldi 428-9 (for type); Depeyrot 20/7; Calicó -; DOC -; Hunter -; Biaggi 1990; Kampmann 18 (this coin) = AdG p. 42 (this coin) = DDTP p. 25 (this coin); NAC 49, lot 468. 4.45g, 19mm, 6h.

Good Extremely Fine. Excessively Rare.

This coin published at www.moneymuseum.com;
This coin published in U. Kampmann, Menschengesichter. Götter, Herrscher, Ideale - das Antlitz des Menschen im Münzbild (Zürich, 2005);
This coin published in A. Wenzel, D. Pommerening, G. Frick, Atlas des Geldes (Zürich, 2003);
This coin published in U. Kampmann, Drachme, Dirhem, Taler, Pfund - Geld und Währungen in der Geschichte. Von den Anfängen bis zum EURO (Zürich, 2000);
From the Long Valley River Collection;
Ex MoneyMuseum Zürich Collection, Classical Numismatic Group, Triton XVIII, 6 January 2015, lot 1241 (hammer: USD 27,500);
Ex Antiqua Inc. (Steve Rubinger), List VII, 1999/2000, no. 111;
Ex A. Tkalec AG, 23 October 1998, lot 311.