Supplemental is a subtheme of Classic that consists of 140 sets that ran from 1960 to 1971. Most sets were released in 1966 which accounted for 72 sets. As of today, the average annual growth of sets in Classic Supplemental is approximately 5.4% per year.
Most valuable Classic Supplemental set
890-2 Lockable Storage Box $434.55
Highest growth Classic Supplemental set
493-2 European Flags +37228.00%
Largest Classic Supplemental set
521-9 1x1 and 1x2 Plates 82 pieces
Most owned Classic Supplemental set
995 Lighting Bricks with Color Filters
Starting in the 1950s LEGO began individual parts sales, a practice that began with the Ferguson Tracktor in 1951. LEGO would supply dealers with wooden parts boxes and refill packs. These individual part sales would continue, at least in some markets, into the late 1950’s.
1 to 50 of 140 sets

442A International Flags

Theme / Subtheme Classic / Supplemental
Year 1971
Pieces 6
Availability Retired
442A LEGO International Flags
Retail $0.50
Value $62.11
Growth  +12322.0%
Annual growth 7.8%

442B 6 International Flags

Theme / Subtheme Classic / Supplemental
Year 1971
Pieces 6
Availability Retired
442B LEGO 6 International Flags
Retail $0.50
Value $105.42
Growth  +20984.0%
Annual growth 8.8%

445A Lighting Device Pack with Improved Plugs

Theme / Subtheme Classic / Supplemental
Year 1970
Pieces 8
Availability Retired
445A LEGO Lighting Device Pack with Improved Plugs
Retail $2.99

971 52 Flat Tile Bricks

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 52
Availability Retired
971 LEGO 52 Flat Tile Bricks
Retail $0.50
Value $32.21
Growth  +6342.0%
Annual growth 3.8%

987 Number Bricks

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 52
Availability Retired
987 LEGO Number Bricks
Retail $0.50
Value $49.61
Growth  +9822.0%
Annual growth 7.1%

988 Alphabet Bricks

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 52
Availability Retired
988 LEGO Alphabet Bricks
Retail $0.50
Value $45.09
Growth  +8918.0%
Annual growth 6.9%

923 50 Bricks Curved and Round

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 50
Availability Retired
923 LEGO 50 Bricks Curved and Round
Retail $0.50
Value $30.68
Growth  +6036.0%
Annual growth 5.6%

970-2 47 1/3 Element Plates

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 47
Availability Retired
970-2 LEGO 47 1/3 Element Plates
Retail $3.50
Value $20.87
Growth  +496.3%
Annual growth 2.7%

981 34 Sloping Profile Bricks Red

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 39
Availability Retired
981 LEGO 34 Sloping Profile Bricks Red
Retail $0.50
Value $45.39
Growth  +8978.0%
Annual growth 6.9%

981-2 34 Blue Sloping Profile Bricks

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 39
Availability Retired
981-2 LEGO 34 Blue Sloping Profile Bricks
Retail $0.50
Value $52.86
Growth  +10472.0%
Annual growth 7.2%

919 Bricks and Studs

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 31
Availability Retired
919 LEGO Bricks and Studs
Retail $0.50
Value $21.19
Growth  +4138.0%
Annual growth 5.4%

922 Bricks and Studs

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 28
Availability Retired
922 LEGO Bricks and Studs
Retail $0.50
Value $21.19
Growth  +4138.0%
Annual growth 5.6%

980 23 Red Sloping Bricks

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 23
Availability Retired
980 LEGO 23 Red Sloping Bricks
Retail $0.50
Value $24.52
Growth  +4804.0%
Annual growth 5.8%

980-2 23 Blue Sloping Bricks

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 23
Availability Retired
980-2 LEGO 23 Blue Sloping Bricks
Retail $0.50
Value $12.28
Growth  +2356.0%
Annual growth 4.6%

995 Lighting Bricks with Color Filters

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 23
Availability Retired
995 LEGO Lighting Bricks with Color Filters
Retail $2.25
Value $50.70
Growth  +2153.3%
Annual growth 3.0%

918-2 21 8-Stud Bricks

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 21
Availability Retired
918-2 LEGO 21 8-Stud Bricks
Retail $0.50
Value $29.00
Growth  +5700.0%
Annual growth 6.2%

994 Fences with Garden Gates

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 19
Availability Retired
994 LEGO Fences with Garden Gates
Retail $0.50
Value $12.67
Growth  +2434.0%
Annual growth 4.6%

906 12 Doors and 5 Hinges

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 17
Availability Retired
906 LEGO 12 Doors and 5 Hinges
Retail $0.50
Value $18.66
Growth  +3632.0%
Annual growth 5.8%

900-2 4 Small Wheels with Accessories

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 12
Availability Retired
900-2 LEGO 4 Small Wheels with Accessories
Retail $0.50
Value $31.49
Growth  +6198.0%
Annual growth 4.4%

903 Train Wheels and Couplers

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 10
Availability Retired
903 LEGO Train Wheels and Couplers
Retail $0.50
Value $18.13
Growth  +3526.0%
Annual growth 5.2%

914 Red Windows

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 10
Availability Retired
914 LEGO Red Windows
Retail $0.50
Value $41.26
Growth  +8152.0%
Annual growth 6.8%

914-2 White Windows

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 10
Availability Retired
914-2 LEGO White Windows
Retail $0.50
Value $39.00
Growth  +7700.0%
Annual growth 4.0%

964 Building Plates

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 10
Availability Retired
964 LEGO Building Plates
Retail $0.50
Value $21.19
Growth  +4138.0%
Annual growth 3.2%

989 10 Traffic Signs

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 10
Availability Retired
989 LEGO 10 Traffic Signs
Retail $0.50
Value $71.12
Growth  +14124.0%
Annual growth 7.8%

915 Bricks, Studs and Angles

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 9
Availability Retired
915 LEGO Bricks, Studs and Angles
Retail $0.50
Value $21.00
Growth  +4100.0%
Annual growth 6.0%

901-2 2 Large Wheels with Accessories

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 7
Availability Retired
901-2 LEGO 2 Large Wheels with Accessories
Retail $0.50
Value $17.81
Growth  +3462.0%
Annual growth 4.2%

902 5 Turntables

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 5
Availability Retired
902 LEGO 5 Turntables
Retail $0.50
Value $25.00
Growth  +4900.0%
Annual growth 5.5%

985 Lighting Device Parts Pack

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 4
Availability Retired
985 LEGO Lighting Device Parts Pack
Retail $0.50
Value $23.02
Growth  +4504.0%
Annual growth 3.3%

986 One Light Bulb

Theme / Subtheme Classic / Supplemental
Year 1969
Pieces 1
Availability Retired
986 LEGO One Light Bulb
Retail $0.99

235-2 Garage Plate and Door Gray Base and Door Frame

Theme / Subtheme Classic / Supplemental
Year 1968
Pieces 5
Availability Retired
235-2 LEGO Garage Plate and Door Gray Base and Door Frame
Retail $1.00
Value $32.24
Growth  +3124.0%
Annual growth 5.2%

494 Gates and Fence Red

Theme / Subtheme Classic / Supplemental
Year 1967
Pieces 17
Availability Retired
494 LEGO Gates and Fence Red
Retail $0.50
Value $25.00
Growth  +4900.0%
Annual growth 3.3%

494-2 Gates and Fence White

Theme / Subtheme Classic / Supplemental
Year 1967
Pieces 17
Availability Retired
494-2 LEGO Gates and Fence White
Retail $0.50
Value $57.45
Growth  +11390.0%
Annual growth 7.1%

403-2 Train Couplers and Wheels

Theme / Subtheme Classic / Supplemental
Year 1967
Pieces 12
Availability Retired
403-2 LEGO Train Couplers and Wheels
Retail $0.50
Value $26.00
Growth  +5100.0%
Annual growth 5.7%

404-3 Wheels for Motor

Theme / Subtheme Classic / Supplemental
Year 1967
Pieces 12
Availability Retired
404-3 LEGO Wheels for Motor
Retail $0.50
Value $31.22
Growth  +6144.0%
Annual growth 6.0%

404-4 Wheels for the Motor

Theme / Subtheme Classic / Supplemental
Year 1967
Pieces 12
Availability Retired
404-4 LEGO Wheels for the Motor
Retail $0.50
Value $26.24
Growth  +5148.0%
Annual growth 3.3%

890-2 Lockable Storage Box

Theme / Subtheme Classic / Supplemental
Year 1967
Pieces 1
Availability Retired
890-2 LEGO Lockable Storage Box
Retail $4.00
Value $434.55
Growth  +10763.8%
Annual growth 8.3%

471 Tiles

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 52
Availability Retired
471 LEGO Tiles
Retail $0.50
Value $28.61
Growth  +5622.0%
Annual growth 4.6%

423-4 Curved and Round Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 50
Availability Retired
423-4 LEGO Curved and Round Bricks
Retail $0.50
Value $46.39
Growth  +9178.0%
Annual growth 5.5%

434 50 Lettered Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 50
Availability Retired
434 LEGO 50 Lettered Bricks
Retail $0.50
Value $53.29
Growth  +10558.0%
Annual growth 6.9%

437 50 Numbered Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 50
Availability Retired
437 LEGO 50 Numbered Bricks
Retail $0.50

421 1x2 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 44
Availability Retired
421 LEGO 1x2 Bricks
Retail $0.50
Value $20.63
Growth  +4026.0%
Annual growth 3.3%

487-2 1x1 Bricks with Numbers

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 44
Availability Retired
487-2 LEGO 1x1 Bricks with Numbers
Retail $0.50
Value $58.16
Growth  +11532.0%
Annual growth 5.4%

488 1x1 Bricks with Letters

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 44
Availability Retired
488 LEGO 1x1 Bricks with Letters
Retail $0.50
Value $108.93
Growth  +21686.0%
Annual growth 5.8%

470 1x1, 1x2, 2x2, 2x3, 2x4 Plates

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 39
Availability Retired
470 LEGO 1x1, 1x2, 2x2, 2x3, 2x4 Plates
Retail $0.50
Value $50.00
Growth  +9900.0%
Annual growth 5.1%

481-5 Slopes Regular, Double, Angle, Valley and Corner Red

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 34
Availability Retired
481-5 LEGO Slopes Regular, Double, Angle, Valley and Corner Red
Retail $0.50
Value $15.75
Growth  +3050.0%
Annual growth 4.1%

481-6 Slopes Regular, Double, Angle, Valley and Corner Blue

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 34
Availability Retired
481-6 LEGO Slopes Regular, Double, Angle, Valley and Corner Blue
Retail $0.50
Value $23.94
Growth  +4688.0%
Annual growth 5.4%

420-4 2x2 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 33
Availability Retired
420-4 LEGO 2x2 Bricks
Retail $0.50
Value $20.15
Growth  +3930.0%
Annual growth 2.9%

422 1x1, 1x2, 1x4, 1x6, 1x8 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 28
Availability Retired
422 LEGO 1x1, 1x2, 1x4, 1x6, 1x8 Bricks
Retail $0.50
Value $20.96
Growth  +4092.0%
Annual growth 5.2%

423-3 Curved and Round Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 28
Availability Retired
423-3 LEGO Curved and Round Bricks
Retail $0.50
Value $30.55
Growth  +6010.0%
Annual growth 5.9%

419-3 2x3 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 25
Availability Retired
419-3 LEGO 2x3 Bricks
Retail $0.50
Value $17.58
Growth  +3416.0%
Annual growth 3.0%