IOVI CONSERVATORI

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

Jupiter draped, standing left, holding thunderbolt with the right hand and a scepter with the left hand.

Photo of a coin sold the 12/09/2011 by Heritage Auctions, Auction 3015, lot 23364, link to the sale: https://www.acsearch.info/search.html?id=1070078, link to their website: https://www.ha.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.