undetermined coutermarked ancient coin

Bosporus or Pontus?, , ?.,
Æ 33 (32-33 mm / 12,88 g), brass,
Obv.: ... , 3 countermarks: circular: bearded head facing r. (cf. Howgego 114i ) , circular: emperor standing left (cf. Howgego 229), rectangular: thunderbolt (?) (or standing figure or LXIIF ?) (cf. Howgego 473(thunderb.) and 738 (LXIIF)) .
Rev.: (blank by wear and countermarking).
cf .https://www.cngcoins.com/Coin.aspx?CoinID=72044 . http://www.numismatikforum.de/viewtopic.php?f=6&t=55074&p=469563#p469563