Watch List notes:

ROMAN. Trajan Decius, with Herennius Etruscus. Joint reign, May-June AD 251. PB Seal (28mm, 36.99 g). Confronted busts of Trajan Decius, radiate, draped, and cuirassed right, and Herennius Etruscus, radiate, draped, and cuirassed left / Blank. Cf. RLS  (for laureate portraits with legend AVGG NN or similar, tentatively attributed to these rulers); Rostowzew & Prou –; Leukel –; Récamier –; Ficorini –; CNG 53, lot 1675. Marks. VF. Extremely rare – a type that would have only been in use for a little over a month.

From the Peter J. Merani Collection. Ex Classical Numismatic Group Electronic Auction 96 (18 August 2004), lot 174.