Constantine Campgate- Need help reading mint

[JRoME]

Was listed in a junk box as SMANT(A), I thought it was  when I bought it. Now I think it's most likely a B because A and  don't satisfy the need for a Laureate head only AND a dot in the doorway. Do you agree it is SMANTB?

CONSTAN-TINVS AVG
Laureate head only
PROVIDENTIAE AVGG
Campgate with 2 Turrets, dot in doorway
18mm, about 2-1/2g

Thank you

[Matthew W2]

That looks like a B to me. I'd say definitely not  , and the top right looks too curvy to be A (and the crosspiece would be too strong for A too, I think).

[gavignano]

B

[wandigeaux (1940 - 2010)]

I think it a B, as well.  George S.

[areich]

Do junk boxes now have indexes? 

[JRoME]

Thank you all for your help.
I guess I should have said bargain bin instead of junk box.  It was a shoebox full of coins in flips for $5 a piece.  Some had indexes, most did not.  I have no coin stores around and this is the only coin show I've been to so perhaps my terminology is not correct.