Watch List notes:

Salonina. Augusta, AD 254-268. Antoninianus (22.5mm, 7.76 g, 1h). Piedfort or trial striking(?). Rome mint, 4th officia. 9th issue, AD 265+. SALONINA AVG, diademed and draped bust right on crescent / FECVNDITAS AVG, Fecunditas standing left, holding cornucopiae and extending hand to child; Δ in right field. MIR 36, 580aa; RIC V (sole reign) 5; Cunetio 1318. VF, porous, with green deposits, some silver content. Flan is 2 mm thick.

Bought from David Miller 2003.

This coin is approximately double the normal weight. Such a wide variation seems unlikely to have been accidental, and the coin may have been some sort of presentation piece, or perhaps a trial striking from new dies.