Redeunt Saturnia Regna
Carausius. Romano-British Emperor, AD 286-293. Antoninianus (19mm, 3.10 g, 10h). ‘RSR’ mint. [IMP CARA]VSIVS P F AVG, radiate, draped, and cuirassed bust right / CONCORD MI, clasped hands; RSR. RIC V 603. VF, brown surfaces, areas of roughness. Rare.
From the Norm Brand Collection. Ex Classical Numismatic Group 33 (15 Mach 1995), lot 1015.
This mintmark has yet to be positively identified, but see de la Bédoyère, "Carausius and the Marks RSR and I.N.P.C.D.A.," NC 1998, for an interpretation of RSR as a quote from Vergil's Eclogues iv.6-7: Redeunt Saturnia Regna, and the placement of the issue at London.