I believe what you are reporting, the information I am referring to is the noted
hoard finds and coin losses. It is a
bit of a mystery because the trachea and the
tetarteron had two separate values, the
tetarteron being lower. However the
tetarteron is rarely found in
Asia Minor before the 13th century and trachea were rarely found in the Greek
part of the empire. When the empire falls to the Latins the
tetarteron begins appearing as newly minted coins in the breakaway states of
Asia Minor. Even
Bulgaria did not use the
tetarteron, they used tracheas in that region.
The problem with this is , Did things cost more in those parts of the empire? If not Did they have a credit system in place?
The imitation tetartera I am not certain where they were found but I believe in the Greek
part. This only started coming to light in the past 20 years, again this causes more problems because they were light
weight counterfeits or imitations and those were included in the
weights for the original studies done by
Hendy and
Metcalf in the 1960's, that really messes up the known
weights for the coins.
So the coins you are seeing , were they found with other issues? Anything to give an idea on when they were buried? Was it pre reform coins ( Before 1092) or coins found after 13th century or ?