Watch List notes:

The Akio Seki Collection - British North Borneo - Tenom Rubber Company Limited - 50 cents M unknown (LaWe 782 / SS 70 / Pridm -) - Obv. In the centre, in three lines: value + M. Legend : Tenom Rubber Co Ld / Rev. Plain - german silver 26.5 mm - Octagonal. Saran Singh describes this piece with a diameter of 25 mm., VF / R2: very rare