IJkkantoor = Verificaton office
1 Kilo . = 1 Kilogram. . .# 19 = Maastricht.- Q = 1906 - R = 1947
500 gram.= 5 Hektogram. # 19 = Maastricht.- Q = 1906 - R = 1947
200 gram.= 2 Hektogram. # 19 = Maastricht.- Q = 1906 - H = 1934
100 gram.= 1 Hektogram. # 19 = Maastricht.- Q = 1906 - H = 1934
100 gram. = 1 Hektogram.#19 = Maastricht.- Q = 1906 - H = 1934
. 50 gram. = 5 DG=Decigram 19= Maastricht- Q = 1906 - H = 1934
. 20 gram. = 2 DG # 3 = Arnhem . - P = 1904 - H = 1934
. 10 gram. = 1 DG # 19 = Maastricht - Q = 1906 - H = 1934
. 10 gram. = 1 DG = 10 gram 19 = Maastricht- Q = 1906 - H = 1934
. 5 gram. = 5 G # 3 = Arnhem . - C = 1926
. 2 gram. = 2 G # 3 = Arnhem - Afgekeurd / Rejected
. 2 gram. = 2 G # 5 = Den Haag. - B = 1965 - F = 1972
. 1 gram Afgekeurd/ Rejected # D =1967 -E = 1969