Weltmeister was the main accordion brand of the GDR, made in Klingenthal by VEB Harmona. There is no factory table of serials — but the community-established format “YY/#####” carries the year in its first two digits, and a second older format appears to end with it. This archive shows the rule and the confirmed examples, clearly marked unofficial.
The record makes room for uncertainty when a precise year is unavailable.
Factory and production era appear alongside the date when supported by a source.
See the source behind a match and what still needs to be confirmed.
The archive currently covers 1 series and 2 dating ranges from 2002 to 2006, compiled from published maker records and reference charts. Coverage grows as new tables are verified.
The exact spot varies by era and instrument type — the serial number guide walks through the common locations.
Recheck the characters exactly as marked, including any letters and leading zeros. Letter-prefixed numbers often belong to student or non-domestic lines that cannot be dated from the number. Some production periods may simply not be covered yet.