I don't think the term imitative is dismissive in any way. It simply means they imitated the types of another coinage. They certainly were not forgeries. They certainly were tribal coinage. Yes, they were struck by barbarians for barbarians. Still, they are imitative and not protomoney or protocoinage.
just to expand a
bit more
we have other classes of this
type of coinage
the arab -
byzantine is a great example
these are the coins that the first umayyad caliphs issued for their tribesman yet we do not call them
imitative when the umayyad caliphate cames into existence they issue coins that imitates the
byzantine counterpart , so you have gold and copper coins.
only after 80AH or 700ad they reform the coinage and start to issue their own
types as you know islam forbids idolatry and assumes that the power stems from god and not from the caliph, and this is why no pictures is usually found on
islamic coins (there are some exceptions of course but 99% of
islamic coins have legends only)
yet some of these coins carry the figure of the caliph just to make them look like the
byzantine ones
another example is the serbian and
bulgarian issue of the venetian grosso
another is the
celtic imitation of greek macedonian copper of the III and II century BC
and finally even the mighty US dollar started out as an
imitative coinage as it was imitating the
spanish piece of 8
which at the time was the most widely used currency in the world
even the $ sign is thought to originate form the ribbon that went around the pillar of
hercules so for this i think it s
wise to assume that these "barbarians" once they came into contact with mighty
rome started to copy and assimilate whatever was needed