Where was this coin minted?

Where was this coin minted?
 

Gordian III (r. 238-244 CE)

1 Antoninianus

Silver

Obv: Head of Gordian III, laureate, draped and cuirassed, IMP GORDIANVS PIVS FEL AVG [Supreme commander (Imperator), Gordian, the pious emperor (Augustus)]

Rev: Sol, nude except for cloak around shoulders, raising right hand and holding globe in left hand, AETERNITATI AVG [(Dedicated to the) immortal emperor]

1. 3.86 grams
2. 23 mm 
   
   
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If you mean this coin: N#280814, it was minted in Rome according to the RIC cataloge. You can also check it here: https://numismatics.org/ocre/id/ric.4.gor_iii.83.