Doubled my Decius Double Sestertii

I didn't see this thread when it started the other day. Here are my coins of Trajan Decius and family.

Trajan Decius AR Antoninianus, 249-251 AD. Obv. Radiate bust right, draped and cuirassed, IMP C M Q TRAIANVS DECIVS AVG/ Rev. Uberitas stdg. left, holding purse and cornucopiae, VBERITAS AVG. RIC IV-3 28b, RSC IV 105, Sear RCV III 9384. 23 mm., 4.9 g.



Trajan Decius, AR Antoninianus, 249-250 AD, Rome Mint. Obv. Radiate and cuirassed bust right, IMP C MA Q TRAIANVS DECIVS AVG / Rev. Dacia standing left, wearing cloak over left shoulder and, with right hand, holding Dacian battle-standard surmounted by Draco (wolf’s head), D-A-CIA. RIC IV 12(b), RSC IV 16, Sear RCV III 9368. 22.28 mm., 4.09 g.



Trajan Decius, billon Tetradrachm, 249-251 AD, Syria Coele, Antioch Mint. Obv. Radiate bust right, three pellets below (•••), ΑΥΤ Κ Γ ΜƐ ΚΥ ΔƐΚΙΟϹ ΤΡΑΙΑΝΟϹ ϹƐΒ / Rev. Eagle standing left on palm branch, wings spread, wreath in beak, ΔΗΜΑΡΧ ƐΞΟΥϹΙΑϹ [= Tribunicia Potestas], in exergue: S C. [Group II, Officina 3.] RPC [Roman Provincial Coinage] Online IX 1644 (see https://rpc.ashmus.ox.ac.uk/coins/9/1644 ); Prieur 540 (11). McAlee 1120c. 24 mm., 12.85 g.



Herennia Etruscilla (wife of Trajan Decius) AR Antoninianus, 249-251 AD, Rome Mint. Obv. HER ETRVSCILLA AVG, Draped bust right, wearing stephane, crescent behind / Rev. PVDICITIA AVG, Pudicitia standing left lifting her veil and holding scepter. RIC IV-3 58b, RSC IV 17. 21.77 mm., 3.82 g. EF.



Herennius Etruscus Caesar (son of Trajan Decius), AR Antoninianus, 250 AD. Obv. Radiate & draped bust right, Q HER ETR MES DECIVS NOB C / Rev. Spes advancing left, raising skirt & holding flower, SPES PVBLICA. RIC IV-3 149, RSC IV 38. 22 mm., 4.37 g.



Hostilian Caesar (son of Trajan Decius), AR Antoninianus, 251 AD, Rome Mint. Obv. Radiate, draped, and cuirassed bust right, C VALENS HOSTIL MES QVINTVS N C / Rev. Mars running right, holding spear in right hand and shield in left, MARTI PROPVGNATORI (Mars the Defender). RIC IV-3 177b, RSC IV 15, Sear RCV III 9556 (ill.). 22 mm., 3.65 g.

 

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My 7.5g dupondius is not very heavy for that denomination and even light compared to my-your/your light double sestertii.


However my other sestertii are 18.1g and 14.2g leaving the impression there either was a somewhat drastic standards change mid reign or the the guys at the mint had no concern for the size of the individual coin (much worse than the average for all reigns).

 

I suspect the latter might have been the case. It's an outlier, but my heaviest antoninianus of Decius weighs 6.56g:


The lightest one 3.02g: