The token is made of
A = Aluminium | B = Brass | Bz = Bronze
C = Copper | G = gold coloured/gilded | S = Iron (magnetic) | SS = Steel (not magnetic)
L = Lead | Z = Zinc or Zamac
Ag = Silver | T = Tin or Pewter
WM = White metal, alloy, Copper-Nickel, or Nickel (light magnetic)
/ = over (e.g. WM/B is White metal over Brass)