Watch List notes:

Britannic Empire, Carausius (287-293), AE Antoninianus, Londonium, IMP CARAVSIVS P F AVG, laureate, draped and cuirassed bust right, rev. [PAX] AVG, Pax standing left, F-C across field, ML in exergue, 4.57g, 12h (RIC 98, 99 and 101), traces of silvering, otherwise lustrous, almost extremely fine.
Provenance
Gorny and Mosch, Auction 236, 7 March 2016, lot 497
Künker [Osnabrück], Auction 270, 2 October 2015, lot 8948
Estimate: £200 - £300