Ernst Louis Arnold — ELA — was the other great Carlsfeld bandoneon workshop. Published research places the serials 18,585–37,850 in 1926–1939. After nationalisation the VEB-era numbers stopped being chronological, so dating stops with the block.
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 1 dating ranges from 1926 to 1939, 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.