Hi,
As a Carausius collector I have a number of "unpublished" coins but given the poor quality of RIC 5 that is not unusual. So, I want to post here a coin of Tacitus from my trays that is an abschlag, a coin in base metal struck from dies intended for gold coinage:
(https://www.forumancientcoins.com/gallery/albums/userpics/11521/Rjb_tac_abs_06_05.jpg)
Tacitus 275-6 AD
AE abschlag
Siscia Mint
IMP C M CLA TACITVS AVG
Laureate, draped and cuirassed bust right
PM TRP COS PP
Emperor standing left holding branch
RIC -, C -
One other example recorded in Vienna (ex von Kolb collection, from the Nassenfuss hoard, Mokronog, Slovenia), published in NZ 12, 1880, pp 321-3
In 1999 Silviane Estiot published the other example of this base metal strike in Journal des Savants, "L'or romain entre crise et restitution, 270-276 apr. J.-C. II. Tacite et Florien", number 24a:
(https://www.forumancientcoins.com/gallery/albums/userpics/11521/normal_estiot_2.jpg)
(https://www.forumancientcoins.com/gallery/albums/userpics/11521/estiot_1.jpg)
These coins share their obverse die with a known gold strike, coin number 38a in the listing by Estiot:
(https://www.forumancientcoins.com/gallery/albums/userpics/11521/normal_estiot_3.jpg)
The role of such off metal strike is uncertain and this is probably the closest I will get to a gold aureus of Tacitus.
Regards,
Mauseus