1918 - F#497.5, also nickel-plated - 236 350 1918 - F#497.5a) Obverse: SIEGEN is 12.0 mm wide, S is on the top 0.4 mm from I ; Reverse: G in PFENNIG is round - 1918 - F#497.5b) like a) but SIEGEN is 12.5 mm wide - 1918 - F#497.5c) like a) but S is on the top 0.6 mm from I - 1918 - F#497.5d) like a) but G in PFENNIG is square - 1918 - F#497.5e) like d) but S is on the top 0.6 mm from I - 1918 - Zinc cast counterfeit -