Hi,
I would say (as your serial numbers have 7 digits, and mine, starting with 13, have eight) that they are the "09****** - 1992/1993" ones. The labels just do not carry the 0. Can you tell what kind of drivers are in the speakers?
We will persist!
J.
I must correct myself - it seems that there are serial numbers starting with a 9.
You named the reason: those are 7 digits.
Later on (with the change from 9 to 10) they made the now used 8 digits version.
MM
Location: Flensborg————Danmark