Valentinian I

Hello guys!

I have this nummis from Valentinian I. from Siscia mint.
Obv: "DN VALENTINIANVS PF AVG"
Rev: "SECVRITAS REIPVBLICAE / D- / BSISC

I can't find exact match, with just "D" on the left.
RIC IX#7a,ii ---> no fieldmarks
RIC IX 15a,xiii ---> "D" at left, "S" at right

Is it exist with just D? Or it is just a variant?

weight: 2,8g
diameter: 17-18mm

Thanks for any help, I'm really beginner with Roman coins.

Are you sure the mint mark is "BSISC"? Judging from the image it's possible it's: Valentinian I, AE3, Siscia. DN VALENTINI-ANVS PF AVG, pearl diademed, draped, cuirassed bust right / SECVRITAS-REIPVBLICAE, Victory walking left, holding wreath and palm. D in left field. Mintmark: star ASISC. RIC IX Siscia 15a, type xi-a.



You can find it on WildWinds here: http://www.wildwinds.com/coins/ric/valentinian_I/t.html

Super, thank you! That’s why I coudn’t find it :)