Lego System i Leg Sets
1955 — 1958

These supplementary sets were packaged in a generic box sleeve localized for the specific market. The set contents were indicated on the inner tray.

Lego System Sets
1958 — 1959

These supplementary sets were packaged in a single generic box sleeve that was used in all markets. The set contents were indicated on the inner tray.

Lego System Sets
1960 — 1965

For a rather complete review of the supplementary box variations, see Steve Scott’s misbi.com. These supplementary sets were packaged semi-ramdomly in a number of different box sleeves, which varied by region. The set contents were indicated on the inner tray. Beginning around 1964—1965 the sets were packaged in one-piece “Klik-Loc” boxes.

Lego System by Samsonite Sets
1961 — 1965

The North American Samsonite sets were packaged in “Klik-Loc” type boxes and used one of four different designs.

Lego Sets
1966 — 1968

These supplementary sets were packaged in “Klik-Loc” type boxes that were unique to each set. It was the first design to show the specific contents on the cover.