Constantine I GLORIA EXERCITVS from Trier with dot between banners

[Victor]

This coin has a small dot between the banners at the top; not to be confused with the centering dot. It's a small dot (bigger than the centering dot), perhaps something left over from the engraving process or perhaps some form of workshop control.



Constantine I
A.D. 332-333
18mm    2.6g
CONSTANTI-NVS MAX AVG; rosette-diademed, draped and cuirassed bust right.
GLOR-IA EXERC-ITVS; Two soldiers helmeted, stg. facing one another, reversed spear in outer hands, inner hands on shields resting on the ground; between them two standards with • between them at top.
in ex. TR•S
RIC VII Trier 537 var.

[Lech Stępniewski]

I am still not convinced but maybe you are right and this dot was used to mark a sub-issue etc.

I have found two similar examples:



And the second one with dot at the bottom