Tula bayans (Тула-302 and relatives) are the standard Soviet-era button accordion. Their serial numbers were not chronological, and even Russian collectors agree the year cannot be read from the number. What does work: the internal ОТК (quality-control) stamp, which often carries the year, plus construction features.
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.
No public records — dated by features.
Open the serial lookup →No serial records survive for Tula bayans — these observations place an instrument by what is on it. Each is sourced.
Tula bayan serial numbers do not encode the year. Look for the internal ОТК stamp (often dated) and construction features.
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.