1916, German East Africa (DOA). Large Copper 20 Heller Coin. Mint Date: 1916 Region: East Africa Mint Place: Tabora (T) Denomination: 20 Heller Reference: KM-15 (Obverse A / Reverse B). Material: Copper Weight: 11,05gm Diameter: 29mm Obverse: Small crown of the German Empire with ribbons above date, flanked by rosettes. Initials (DOA) and mint initial (T) below. Reverse: Value (2 ...