Kappa and theta would be the number of 29, and I can't think of a way that would make sense for a
weight. However, I am not sure that horizontal
bar means 'number' in
Byzantine times, as it certainly did in
Roman times. A
bar like that means a contraction on
Byzantine coins (IC XC for 'Iesous Christos' always has a
bar on top). Gamma might be 3 for 3 nummi, making this perhaps an emergency issue in lead. There exist small
denominations in lead. But an explanation of the
obv. has to be offered to be sure. Perhaps a posting in the
BYzantine coin section would be a
good idea.
Regards
Gert