CONCORDIA AVGG

Laureate, draped and cuirassed bust of Pupienus right, seen from three quarters back. 

Concordia seated left on throne, holding patera with the right hand and double cornucopia with the left hand.

Photo of a coin sold the 18/05/2011 by Classical Numismatic Group, Auction 87, lot 1056, link to the sale: https://www.acsearch.info/search.html?id=1003668, link to their website: https://www.cngcoins.com/.

I observe that on most of Pupienus' coins the cuirass is almost invisible and the shoulder appears smooth. Although I have listed a variant with a non-cuirassed bust for other emperors from the same period, this bust of Pupienus seems to be cuirassed. We see streaks indicating a cuirass in the lower shoulder or at least an irregular lower shoulder showing a desire to display a cuirass. Here is an example:

 On this photo the streaks are visible at the bottom of the shoulder. 

However, we cannot exclude that only draped busts exist. So far, I haven't noticed an example where the shoulder is undoubtedly smooth.