Leolaia you have a pm
Somebody bite on the **Daniel 5:25 NWT-Cross Reference Why Half Shekel? Not half mene?**
Sorry I bungled his name; it's Otto Eissfeldt (http://en.wikipedia.org/wiki/Otto_Eissfeldt). He is the one in the critical literature who advanced the "half shekel" reading, so the Society is probably drawing on some of his ideas.
I'll take a look at the PM; meanwhile for more info on the stuff in my last post, see Raz Kletter's Economic Keystones: The Weight System of the Kingdom of Judah (1998).