Watch List notes:

Tonkin, Zinc essai 1/600 Piastre (Paris) (Zinc, 2.53 gr, 25 mm) Legend around center squared hole PROTECTORAT DU TONKIN Rev. Value above and below squared hole in center flanked by thong-bao. Plain edge. KM E1, Lecompte 2. PCGS Genuine (UNC Details, Env. Damage)