Claudius AR Denarius, AD 41-54. Rome mint. 19 mm, 3.59 g.

TI CLAVD CAESAR AVG P M TR P (with dots as punctuation), head of Claudius right, wreathed with oak.
CONSTANTIAE AVGVSTI, Antonia (or Tacita or Angerona) seated left on curule chair.

Von Kaenel 109. RIC 2 (aureus) note; Cohen 4 var. (ditto); BMCRE 1 var. (ditto); Paris 19 var. (ditto)..

With permission of Roma Numismatics Ltd Auction XVIII, Lot 1085, Sept. 2019.

Note: This coin is well known as an aureus with this obverse 
legend, but unconfirmed until von Kaenel's study was 
published, in which it is believed only 4 examples survive. 
None in Paris or BM.