Lars,
This coin
comes from the
Mabbott Sale, Hans M. F.
Schulman, NYC, 6-11 June 1969, lot 1489.
RPC temp. 9819 cites this identical coin,
Mabbott 1489, but with four errors:
diameter 36 mm (the plate shows 34 mm, which you also give), allegedly stags either
side of
Diana, the emperors are said to be "holding pateras", and "authenticity doubtful", although the coin seems clearly authentic.
RPC reads ...EFECIWN only from the
rev. legend, but the
legend must clearly have been the same as on a coin of
Marcus Aurelius in the
ANS coll.,
RPC 3553,
AVP MITWN...KAI...ANCOY PRW EFECIWN NEOK....
Rev. apparently same
type as yours, it would be nice to be able to compare the dies, but unfortunately no ill. in the online
RPC!