In 1966, LEGO released 72 Classic Supplemental sets, all of these sets have been retired. For that year, the total price of all retail sets cost $48, today those sets are valued around $2,862.
Most valuable 1966 LEGO Classic Supplemental set
710-2 Lockable Storage Case $281.63
Highest growth 1966 Classic Supplemental set
493-2 European Flags +37480.00%
Largest 1966 LEGO Classic Supplemental set
471 Tiles 52 pieces
Most owned 1966 Classic Supplemental set
400-3 Small Wheels with Axles
1 to 50 of 72 sets

400-3 Small Wheels with Axles

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 12
Availability Retired
400-3 LEGO Small Wheels with Axles
Retail $0.75
Value $36.18
Growth  +4724.0%
Annual growth 5.2%

401-2 Large Wheels with Axles

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 7
Availability Retired
401-2 LEGO Large Wheels with Axles
Retail $0.50
Value $17.68
Growth  +3436.0%
Annual growth 4.9%

402-3 White Turntables

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 5
Availability Retired
402-3 LEGO White Turntables
Retail $0.50
Value $19.79
Growth  +3858.0%
Annual growth 5.1%

403-3 Train Couplers and Wheels

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 12
Availability Retired
403-3 LEGO Train Couplers and Wheels
Retail $0.50
Value $13.30
Growth  +2560.0%
Annual growth 4.5%

414-3 Windows Parts Pack Red

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 10
Availability Retired
414-3 LEGO Windows Parts Pack Red
Retail $0.50
Value $45.12
Growth  +8924.0%
Annual growth 6.6%

414-4 Windows Parts Pack White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 10
Availability Retired
414-4 LEGO Windows Parts Pack White
Retail $0.50
Value $39.14
Growth  +7728.0%
Annual growth 6.3%

414-5 Windows Parts Pack Red

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 10
Availability Retired
414-5 LEGO Windows Parts Pack Red
Retail $0.50
Value $25.34
Growth  +4968.0%
Annual growth 5.5%

414-6 Windows Parts Pack White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 10
Availability Retired
414-6 LEGO Windows Parts Pack White
Retail $0.50
Value $12.12
Growth  +2324.0%
Annual growth 4.2%

415 5 Sixteens and 4 Twenties

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 9
Availability Retired
415 LEGO 5 Sixteens and 4 Twenties
Retail $0.50
Value $21.83
Growth  +4266.0%
Annual growth 5.3%

416 4 Sixteens 2 Twenties

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 6
Availability Retired
416 LEGO 4 Sixteens 2 Twenties
Retail $0.50
Value $20.32
Growth  +3964.0%
Annual growth 5.2%

417-3 Cornerbricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 5
Availability Retired
417-3 LEGO Cornerbricks
Retail $0.50
Value $21.83
Growth  +4266.0%
Annual growth 5.3%

417-4 Cornerbricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 10
Availability Retired
417-4 LEGO Cornerbricks
Retail $0.50
Value $37.69
Growth  +7438.0%
Annual growth 6.2%

418-2 2x4 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 13
Availability Retired
418-2 LEGO 2x4 Bricks
Retail $0.50
Value $28.59
Growth  +5618.0%
Annual growth 6.5%

418-3 2x4 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 21
Availability Retired
418-3 LEGO 2x4 Bricks
Retail $0.50
Value $41.58
Growth  +8216.0%
Annual growth 6.4%

419-2 2x3 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 15
Availability Retired
419-2 LEGO 2x3 Bricks
Retail $0.50
Value $21.83
Growth  +4266.0%
Annual growth 5.3%

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%

420-3 2x2 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 20
Availability Retired
420-3 LEGO 2x2 Bricks
Retail $0.50
Value $17.93
Growth  +3486.0%
Annual growth 4.9%

420-4 2x2 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 33
Availability Retired
420-4 LEGO 2x2 Bricks
Retail $0.50
Value $20.23
Growth  +3946.0%
Annual growth 2.9%

421 1x2 Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 44
Availability Retired
421 LEGO 1x2 Bricks
Retail $0.50
Value $20.96
Growth  +4092.0%
Annual growth 3.3%

421-2 2 Eights 2 Sixes 2 Fours 8 Twos 6 Ones

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 20
Availability Retired
421-2 LEGO 2 Eights 2 Sixes 2 Fours 8 Twos 6 Ones
Retail $0.50

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 $30.66
Growth  +6032.0%
Annual growth 5.9%

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 $46.60
Growth  +9220.0%
Annual growth 5.5%

426 7 Named Beams

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 7
Availability Retired
426 LEGO 7 Named Beams
Retail $0.50
Value $48.58
Growth  +9616.0%
Annual growth 6.7%

427 8 Pieces 2x8

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 8
Availability Retired
427 LEGO 8 Pieces 2x8
Retail $0.50
Value $127.93
Growth  +25486.0%
Annual growth 8.4%

428 5 Plates 4x8

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 5
Availability Retired
428 LEGO 5 Plates 4x8
Retail $0.50
Value $3.16
Growth  +532.0%
Annual growth 4.7%

429 4 Plates 6x8

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 4
Availability Retired
429 LEGO 4 Plates 6x8
Retail $0.50

430-2 Six Trees and Bushes

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 6
Availability Retired
430-2 LEGO Six Trees and Bushes
Retail $0.50
Value $42.47
Growth  +8394.0%
Annual growth 6.5%

431 Gas Station

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 13
Availability Retired
431 LEGO Gas Station
Retail $0.50
Value $55.36
Growth  +10972.0%
Annual growth 6.9%

432 Road Signs

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 8
Availability Retired
432 LEGO Road Signs
Retail $0.50
Value $41.66
Growth  +8232.0%
Annual growth 6.4%

433 6 Street Lamps with Curved Top

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 6
Availability Retired
433 LEGO 6 Street Lamps with Curved Top
Retail $0.50
Value $99.99
Growth  +19898.0%
Annual growth 8.0%

434 50 Lettered Bricks

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 50
Availability Retired
434 LEGO 50 Lettered Bricks
Retail $0.50
Value $53.49
Growth  +10598.0%
Annual growth 6.9%

435-2 Garage Plate and Door

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 3
Availability Retired
435-2 LEGO Garage Plate and Door
Retail $0.50
Value $48.22
Growth  +9544.0%
Annual growth 6.7%

437 50 Numbered Bricks

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

445-2 Lighting Device Pack

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 3
Availability Retired
445-2 LEGO Lighting Device Pack
Retail $0.50
Value $87.64
Growth  +17428.0%
Annual growth 7.7%

451 1x6x3 Windows Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 6
Availability Retired
451 LEGO 1x6x3 Windows Red or White
Retail $0.50

452-2 1x6x2 Windows Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 8
Availability Retired
452-2 LEGO 1x6x2 Windows Red or White
Retail $0.50
Value $86.14
Growth  +17128.0%
Annual growth 7.7%

453-2 1x6x2 Shuttered Windows Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 8
Availability Retired
453-2 LEGO 1x6x2 Shuttered Windows Red or White
Retail $0.50
Value $107.36
Growth  +21372.0%
Annual growth 8.1%

454-2 1x4x2 Windows Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 9
Availability Retired
454-2 LEGO 1x4x2 Windows Red or White
Retail $0.50

455-2 1x3x2 Window, Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 12
Availability Retired
455-2 LEGO 1x3x2 Window, Red or White
Retail $0.50

456-2 1x2x2 Window, Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 15
Availability Retired
456-2 LEGO 1x2x2 Window, Red or White
Retail $0.50

457 1x1x2 Windows Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 19
Availability Retired
457 LEGO 1x1x2 Windows Red or White
Retail $0.50

458 1x2x1 Window, Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 19
Availability Retired
458 LEGO 1x2x1 Window, Red or White
Retail $0.50

459 1x1x1 Windows Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 20
Availability Retired
459 LEGO 1x1x1 Windows Red or White
Retail $0.50

460-2 1x2x3 Door, Red or White

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 13
Availability Retired
460-2 LEGO 1x2x3 Door, Red or White
Retail $0.50

461 Windows and Doors, Retailer Pack

Theme / Subtheme Classic / Supplemental
Year 1966
Availability Retired
461 LEGO Windows and Doors, Retailer Pack
Retail $8.00

462-2 2x8 White Plates

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 16
Availability Retired
462-2 LEGO 2x8 White Plates
Retail $0.50
Value $12.12
Growth  +2324.0%
Annual growth 4.2%

463 4x8 White Plates

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 8
Availability Retired
463 LEGO 4x8 White Plates
Retail $0.50
Value $37.19
Growth  +7338.0%
Annual growth 6.2%

464 6x8 White Plates

Theme / Subtheme Classic / Supplemental
Year 1966
Pieces 6
Availability Retired
464 LEGO 6x8 White Plates
Retail $0.50
Value $34.59
Growth  +6818.0%
Annual growth 5.6%

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 $50.29
Growth  +9958.0%
Annual growth 5.1%