Claudius II from Cyzicus mint

Hello  

I have purchased this coin some days ago:




Ob\ "IMP C M AVR CLAVDIVS AVG", off. mint: "•••".
Rv\ "PAX AETERNA", ex.: "SPQR".
Cyzicus, new RIC n. #944

I have found only 3 ex on new RIC (http://www.ric.mom.fr/en/coin/944?tempRIC=&asmSelect0=&asmSelect1=&Person=Claudius+II&asmSelect2=&asmSelect3=&asmSelect4=&asmSelect5=&asmSelect6=&asmSelect7=&asmSelect8=&asmSelect9=&ReverseMark=%E2%80%93%2F%E2%80%93%2F%2FSPQR&asmSelect10=&asmSelect11=&BustDescription=&ReverseDescription=&Note=&Reference=&page=1&mod=result&hpp=100&from=advanced) and another one from Auctiones GmbH n. 50/2016 lot. n. 242 (here: https://www.acsearch.info/search.html?id=3247784).

All these 5 coins seem to have the same obverse dies (two also the reverse dies).

About Cyzicus mint under Claudius II I know only one paper: "L'overtour de l'atelier imperial de Cyzique sous le regne de Claude II le Gothique" by Jerome Mairat.

What do you think about this coin? Do you know others specimens or others bibliographic references for this mint under Claudius II?
Many thanks!!!

I have only find a bit lot of lines in Dutch, in the Schutijser book for Claudius gothicus mint in Cyzicus :

Thanks for the reference.

There is a study by P. Gysen on ‘A propos des ateliers de Smyrne et de Cyzique sous Claude II le Gothique’ in Bulletin du Centre d’Etudes Numismatiques, Vol 36, n° 2, Avril-Juin 1999.

The matter was also delt with by Andreas Alföldi in ‘Römische Münzprägung und die Historischen Ereignisse im Osten zwischen 260 und 270 n. Chr’, page 66 and sq. (Berytus, Vol. V, 1938), with a similar coin (in Wien) pictured in Taf. XXX n° 24 (that coin may also be illustrated already in RIC Temp).

Many thanks!
I have just sent a mail to mr. Gysen