See also https://asiamedals.info/threads/jap...fficers-pilot-badge-with-two-hallmarks.26855/
Silver, gilt, enamel.
Size 51.7 × 37.2 mm.
Marked
純銀 - pure silver
純金張 - pure gold plated
Punched with "3".
S
Silver, gilt, enamel.
Size 51.7 × 37.2 mm.
Marked
純銀 - pure silver
純金張 - pure gold plated
Punched with "3".
S