
Full stud - with stud logo
From1955
To1956
Old logo - 3mm stud recess - center pip
From1958
To1959

Old logo - smaller stud recess - centered pip - no mold-id
From1960
To1965
Old logo - other pips - no mold-id
From1955
To1960

Old logo - 2x2r - with mold identifiers
From1960
To1965