1918 - F# 586.1 - 1919 - F# 586.4 - 1920 - F# 586.5 - 1920 - F# 586.5a) Reverse Ø of pearl-circle (middle of the pearls) is 22.0 mm; Value is 7.0 mm high - 1920 - F# 586.5b) Reverse Ø of pearl-circle (middle of the pearls) is 21.0 mm; Value is 7.3 mm high - 1921 - F# 586.7 -