Has anyone done any detailed research into the Balkan coinage of Nero?
Not that I know of.
Since the series was only recognized by
MacDowall in Num. Chron. 1960, but most of the known specimens have only emerged from the Balkans after 1990, the series is abysmally catalogued in the
standard references.
Sutherland in
his new
RIC (1984), pp. 186-7, merely summarizes MacDowall's findings without listing the coins individually.
RPC I (1992), 1759-1762, appeared too early to take account of the new flood of material from the Balkans, so mainly merely repeats the few varieties known to
MacDowall, with MacDowall's illustrations too for the most
part.
Little was added in
RPC Suppl I, 1998, p. 24, and Supplement 2,
Part 1, 2006 (online), p. 39.
My own assemblage of material appearing after 1990 has been haphazard, so not thorough or systematic.