Watch List notes:

Caligula Æ Sestertius. Rome, AD 37-38. C•CAESAR•AVG•GERMANICVS•PON•M•TR•POT, laureate head to left / S•P•Q•R P•P OB•CIVES SERVATOS in four lines within oak wreath. RIC I 37; C. 24; Biaggi, Le preziose patine 67 (this coin illustrated); BMCRE 38. 26.82g, 34mm, 8h.

Extremely Fine; magnificent old Tiber patina.

This coin published in E. Biaggi, Le preziose patine dei sesterzi di Roma imperiale (1992);
Acquired from Numismatica Ars Classica AG.