Watch List notes:

Magnentius BI Double Centenionalis. Ambianum, AD 350-353. D N MAGNENTIVS P F AVG, bare-headed, draped and cuirassed bust to right / SALVS DD NN AVG ET CAES, large Chi-Rho; A-ω across fields, AMB in exergue. RIC VIII 34. 9.78g, 26mm, 1h.

Mint State; boasting a wonderful portrait, among the very finest to come to auction in the past decade.

From the collection of a Romanophile;
Ex Brian Henry Grover Collection, Roma Numismatics Ltd., E-Sale 72, 25 June 2020, lot 1666 (hammer: £1,200).