In 1963, LEGO released 4 Classic Supplemental sets, all of these sets have been retired. For that year, the total price of all retail sets cost $2, today those sets are valued around $329, a growth of 16363%.
Most valuable 1963 LEGO Classic Supplemental set
242-1-3 International Flags 3 $110.81
Largest 1963 LEGO Classic Supplemental set
400-4 Small Wheels with Axles 12 pieces
4 sets

242-1-1 International Flags 1

Theme / Subtheme Classic / Supplemental
Year 1963
Pieces 6
Availability Retired
242-1-1 LEGO International Flags 1
Retail $0.50
Value $99.36
Growth  +19772.0%
Annual growth 7.6%

242-1-2 International Flags 2

Theme / Subtheme Classic / Supplemental
Year 1963
Pieces 6
Availability Retired
242-1-2 LEGO International Flags 2
Retail $0.50
Value $99.36
Growth  +19772.0%
Annual growth 7.6%

242-1-3 International Flags 3

Theme / Subtheme Classic / Supplemental
Year 1963
Pieces 5
Availability Retired
242-1-3 LEGO International Flags 3
Retail $0.50
Value $110.81
Growth  +22062.0%
Annual growth 7.8%

400-4 Small Wheels with Axles

Theme / Subtheme Classic / Supplemental
Year 1963
Pieces 12
Availability Retired
400-4 LEGO Small Wheels with Axles
Retail $0.50
Value $19.73
Growth  +3846.0%
Annual growth 4.9%