here's an unrecorded coin Galerius A.D. 296- 297 17x18mm 3.0g [MA]XIMIANVS CAESAR; radiate and draped [maybe cuirassed also] bust right. SOL INVICTO; Sol rad., stg. L., raising r. hand, [globe in l.], chlamys across l. shoulder, in left field A. In ex. ALE RIC VI Alexandria – Ex Giovanni Dattari Collection of Late Roman Bronzes
Yes, the legend is known and I would not have posted this coin as unrecorded if I thought that it was unofficial.