Magnentius-Do I have this right?

[Jay GT4]

Picked this little big coin up today...I'm finding it difficult to attribute because of the weight.  It weighs in at 9.75g.  I believe it is RIC 34

DN MAGNENTIVS PF AVG
Bare headed, draped and cuir. bust right?

dd nn avg et caes' target='_blank'>SALVS DD NN AVG ET CAES
Christogram between A and W

AMB in exergue

9.75g

Double Maiorina?

Flash makes the the patina breaks more visible then they are (they're darker).  I'll take better pictures later but wanted to nail down the attribution

[pdarcan1]

It's definitely either Magnentius or Decentius.  They both had similar coins and had similar profiles... AND their coins of this type were both made in 352-353... GOOD LUCK!

[pdarcan1]

Oh yeah, and I'd say the mint mark is AMB=Ambianum which is really cool because you dont see that one very much as it was only open for a few years at Amiens, France during the revolt of Magnentius (AD 350-353). The AMB mintmark is limited to  Magnentius, Decentius, Constantius II, and Constantius Gallus struck immediately after the defeat of Magnentius.

[Jay GT4]

Thanks!  I knew Magnentius and Constantius shared this type but I was unaware of the others.

The reverse with the AMB mintmark is why I originally bought this coin.  It was covered with a thick waxy paste which I removed with a distilled water boil for 10 minutes.  That removed the wax but revealed why it was on there so thick.  It was hiding the pits and patina break.  Now it's very dull and dried out looking.  I'll put some Ren Wax on it to bring it back to life. 

I'm leaning towards Magnentius.  Once I wax it maybe it will bring out some of the features.  Anyone else...?

[Jay GT4]

No other thoughts?

[curtislclay]

I think it has to be Magnentius, with legend

TIVS P F AVG

before the portrait.

If it were Decentius, that legend before the portrait would have to be

VS CAESAR!

9.75g is clearly full weight, before either of the two reductions this type underwent. The mintmark possibilities are then

AMB, Bastien 135, the commonest

AMB followed by pellet, Bastien 136, also fairly common

AMB preceded by pellet, Bastien 137, one spec. only

AMB followed by palm branch, Bastien 138, one spec. only.

Probably your coin is either Bastien 135 or 136, depending on whether you can see a pellet following the AMB!

[Jay GT4]

Thanks Curtis, so it is RIC 34?

I can't seem to find any as heavy as mine in any online references.  Is this is a Double Maiorina?  I'm a bit confused is a double Maiorina the same as a double Centenionalis?  Can you tell the late Empire is not my forte?