In the second stage, dated to the early mid 8th Century BCE, under the rule
of Judah and probably as part of its developing administration and economy,
the standardized jars became more common than the non-standardized jars,
and in the third stage, dated to the late 8th century BCE,
when Judah was already under Assyrian rule, one type of jar was adopted for
use by the royal administrative system of Judah, as can be demonstrated by
the appearance of stamped impressions on handles of jars from this type.
The gradual standardization of the jars in the mid 8th century BC
indicates a more centralized production and consumption than should be associated
with a consolidation of the Judahite political, economical and administrative systems.
However, the next phase in the history of these jars, during
the late 8th century BC is its adaptation into the royal
administrative system which expanded the distribution and brought
them to all the different geographic regions of the kingdom of Judah.