Dads latest:
I think I have cracked it after a lot of effort. The leads are lettering and reverse figure I can definitely make out:
1.On Obv they are IMP to left of head and G GERM PM to right and base. (this does not fit a Nerva coin).
2.On Obv there is TRPOT to left of a figure of Abunduntia seated left on top of Cornucopia (this is visible & does not fit Nerva either).
They do however fit the TRAJAN range of coins and the head just happens to be a horribly disfigured representation of that ruler.
So my view is Dupondis size as RIC Vol II Pt 2 (guess as only book I do not have) Trajan 411, Sears Vol II 3225 namely:
Obv IMP [CAES NERVA TRAIAN AV]G GERM PM and Rev TR POT [COS ?? PP SC] circa AD98-101 value at Fine is book at $60