Supplemental is a subtheme of System i Leg that consists of 68 sets that ran from 1955 to 1959. Most sets were released in 1958 which accounted for 24 sets. As of today, the average annual growth of sets in System i Leg Supplemental is approximately 6.6% per year.
Most valuable System i Leg Supplemental set
214-4 Windows and Doors Retailer Pack $928.26
Most valuable retail System i Leg Supplemental set
1247-2 Esso Pumps and Sign $302.07
Highest growth System i Leg Supplemental set
1242-2 International Flags +49244.00%
Largest System i Leg Supplemental set
222-2 1x1 Bricks 62 pieces
Most owned System i Leg Supplemental set
1219-2 2x2 Bricks
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 68 sets

282 2x2 Sloping Roof Bricks Red

Theme / Subtheme System i Leg / Supplemental
Year 1959
Pieces 22
Availability Retired
282 LEGO 2x2 Sloping Roof Bricks Red
Retail $0.50
Value $35.96
Growth  +7092.0%
Annual growth 5.6%

281 1x2 and 3x2 Red Sloping Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1959
Pieces 21
Availability Retired
281 LEGO 1x2 and 3x2 Red Sloping Bricks
Retail $0.50
Value $37.76
Growth  +7452.0%
Annual growth 5.7%

281-2 1x2 and 3x2 Blue Sloping Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1959
Pieces 21
Availability Retired
281-2 LEGO 1x2 and 3x2 Blue Sloping Bricks
Retail $0.50
Value $92.39
Growth  +18378.0%
Annual growth 7.1%

282-2 2x2 Blue Sloping Roof Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1959
Pieces 21
Availability Retired
282-2 LEGO 2x2 Blue Sloping Roof Bricks
Retail $0.50
Value $93.44
Growth  +18588.0%
Annual growth 7.1%

280 Red Sloping Roof Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1959
Pieces 14
Availability Retired
280 LEGO Red Sloping Roof Bricks
Retail $0.50
Value $78.32
Growth  +15564.0%
Annual growth 6.8%

280-2 Blue Sloping Roof Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1959
Pieces 14
Availability Retired
280-2 LEGO Blue Sloping Roof Bricks
Retail $0.50
Value $124.89
Growth  +24878.0%
Annual growth 7.6%

222-2 1x1 Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 62
Availability Retired
222-2 LEGO 1x1 Bricks
Retail $0.50
Value $102.81
Growth  +20462.0%
Annual growth 7.2%

223-2 1x1 Round Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 62
Availability Retired
223-2 LEGO 1x1 Round Bricks
Retail $0.50
Value $60.40
Growth  +11980.0%
Annual growth 6.3%

234 Letter Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 50
Availability Retired
234 LEGO Letter Bricks
Retail $0.50
Value $92.34
Growth  +18368.0%
Annual growth 7.0%

221-2 1x2 Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 45
Availability Retired
221-2 LEGO 1x2 Bricks
Retail $0.50
Value $68.58
Growth  +13616.0%
Annual growth 6.5%

220 2x2 Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 33
Availability Retired
220 LEGO 2x2 Bricks
Retail $0.50
Value $92.06
Growth  +18312.0%
Annual growth 9.7%

224-3 2x2 Curved Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 20
Availability Retired
224-3 LEGO 2x2 Curved Bricks
Retail $0.50
Value $106.99
Growth  +21298.0%
Annual growth 7.2%

232-2 16 Road Signs

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 16
Availability Retired
232-2 LEGO 16 Road Signs
Retail $0.50
Value $176.28
Growth  +35156.0%
Annual growth 8.0%

219 2x3 Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 15
Availability Retired
219 LEGO 2x3 Bricks
Retail $0.50
Value $85.99
Growth  +17098.0%
Annual growth 6.9%

218-2 2x4 Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 13
Availability Retired
218-2 LEGO 2x4 Bricks
Retail $0.50
Value $114.77
Growth  +22854.0%
Annual growth 7.3%

214-2 Red Windows and Doors

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 10
Availability Retired
214-2 LEGO Red Windows and Doors
Retail $0.50
Value $82.47
Growth  +16394.0%
Annual growth 6.8%

214-3 White Windows and Doors

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 8
Availability Retired
214-3 LEGO White Windows and Doors
Retail $0.50
Value $111.72
Growth  +22244.0%
Annual growth 7.3%

226 8 Named Beams

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 8
Availability Retired
226 LEGO 8 Named Beams
Retail $0.50
Value $177.33
Growth  +35366.0%
Annual growth 8.0%

229 6x8 & 2x8 Plates

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 8
Availability Retired
229 LEGO 6x8 & 2x8 Plates
Retail $0.50
Value $81.88
Growth  +16276.0%
Annual growth 6.8%

215-2 2x8 Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 6
Availability Retired
215-2 LEGO 2x8 Bricks
Retail $0.50
Value $164.04
Growth  +32708.0%
Annual growth 7.9%

230-2 Six Trees and Bushes

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 6
Availability Retired
230-2 LEGO Six Trees and Bushes
Retail $0.50
Value $235.61
Growth  +47022.0%
Annual growth 8.5%

242 International Flags

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 6
Availability Retired
242 LEGO International Flags
Retail $0.50
Value $114.33
Growth  +22766.0%
Annual growth 7.3%

216 2x10 Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 5
Availability Retired
216 LEGO 2x10 Bricks
Retail $0.50
Value $46.42
Growth  +9184.0%
Annual growth 5.9%

217-2 4x4 Corner Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 5
Availability Retired
217-2 LEGO 4x4 Corner Bricks
Retail $0.50
Value $74.58
Growth  +14816.0%
Annual growth 6.7%

227 4x8 Curved & 2x8 Plates

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 5
Availability Retired
227 LEGO 4x8 Curved & 2x8 Plates
Retail $0.50

228 4x8 & 2x8 Plates

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 5
Availability Retired
228 LEGO 4x8 & 2x8 Plates
Retail $0.50
Value $91.29
Growth  +18158.0%
Annual growth 7.0%

242-2 5 Danish Flags

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 5
Availability Retired
242-2 LEGO 5 Danish Flags
Retail $0.50
Value $124.81
Growth  +24862.0%
Annual growth 7.5%

233 Light Masts

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 4
Availability Retired
233 LEGO Light Masts
Retail $0.50
Value $107.78
Growth  +21456.0%
Annual growth 7.2%

235 Garage Plate and Door White Base and Door Frame

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 3
Availability Retired
235 LEGO Garage Plate and Door White Base and Door Frame
Value $78.60

245 Lighting Device Pack

Theme / Subtheme System i Leg / Supplemental
Year 1958
Pieces 3
Availability Retired
245 LEGO Lighting Device Pack
Retail $1.75
Value $20.00
Growth  +1042.9%
Annual growth 3.8%

1234-2 Letter Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1957
Pieces 50
Availability Retired
1234-2 LEGO Letter Bricks
Retail $0.50

1223-3 2x2 Curved Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1957
Pieces 20
Availability Retired
1223-3 LEGO 2x2 Curved Bricks
Retail $0.50

283 Red Sloping Ridge and Valley Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1957
Pieces 20
Availability Retired
283 LEGO Red Sloping Ridge and Valley Bricks
Retail $0.50
Value $25.39
Growth  +4978.0%
Annual growth 4.9%

283-2 Blue Sloping Ridge and Valley Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1957
Pieces 20
Availability Retired
283-2 LEGO Blue Sloping Ridge and Valley Bricks
Retail $0.50
Value $69.02
Growth  +13704.0%
Annual growth 6.4%

1242-2 International Flags

Theme / Subtheme System i Leg / Supplemental
Year 1957
Pieces 5
Availability Retired
1242-2 LEGO International Flags
Retail $0.50
Value $246.72
Growth  +49244.0%
Annual growth 8.4%

5 Danish Flags

Theme / Subtheme System i Leg / Supplemental
Year 1957
Pieces 5
Availability Retired
LEGO 5 Danish Flags
Retail $0.50

1233-2 Light Masts

Theme / Subtheme System i Leg / Supplemental
Year 1957
Pieces 4
Availability Retired
1233-2 LEGO Light Masts
Retail $0.50

1245-2 Lighting Device Pack

Theme / Subtheme System i Leg / Supplemental
Year 1957
Pieces 3
Availability Retired
1245-2 LEGO Lighting Device Pack

1231-4 Windows and Doors Retailer Pack

Theme / Subtheme System i Leg / Supplemental
Year 1957
Availability Retired
1231-4 LEGO Windows and Doors Retailer Pack

214-4 Windows and Doors Retailer Pack

Theme / Subtheme System i Leg / Supplemental
Year 1957
Availability Retired
214-4 LEGO Windows and Doors Retailer Pack
Value $928.26

225 1x6 and 1x8 Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1957
Availability Retired
225 LEGO 1x6 and 1x8 Bricks
Retail $0.50

224 2x2 & 2x4 Curved Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1956
Pieces 14
Availability Retired
224 LEGO 2x2 & 2x4 Curved Bricks
Retail $0.50

1231-2 Red Windows and Door with Glass

Theme / Subtheme System i Leg / Supplemental
Year 1956
Pieces 10
Availability Retired
1231-2 LEGO Red Windows and Door with Glass
Retail $1.00
Value $1.54
Growth  +54.0%

1231-3 White Windows and Door with Glass

Theme / Subtheme System i Leg / Supplemental
Year 1956
Pieces 10
Availability Retired
1231-3 LEGO White Windows and Door with Glass
Retail $1.00
Value $1.52
Growth  +52.0%

1228-2 4x8 Curved & 2x8 Plates

Theme / Subtheme System i Leg / Supplemental
Year 1956
Pieces 6
Availability Retired
1228-2 LEGO 4x8 Curved & 2x8 Plates
Retail $0.50

1227-2 4x8 & 2x8 Plates

Theme / Subtheme System i Leg / Supplemental
Year 1956
Pieces 5
Availability Retired
1227-2 LEGO 4x8 & 2x8 Plates
Retail $0.50

1226-2 6x8 & 2x8 Plates

Theme / Subtheme System i Leg / Supplemental
Year 1956
Pieces 4
Availability Retired
1226-2 LEGO 6x8 & 2x8 Plates
Retail $0.50

231-2 Esso Pumps and Sign

Theme / Subtheme System i Leg / Supplemental
Year 1956
Pieces 2
Availability Retired
231-2 LEGO Esso Pumps and Sign
Retail $0.50
Value $129.95
Growth  +25890.0%
Annual growth 9.7%

1221-2 1x1 Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1955
Pieces 40
Availability Retired
1221-2 LEGO 1x1 Bricks
Retail $1.00

1222-2 1x1 Round Bricks

Theme / Subtheme System i Leg / Supplemental
Year 1955
Pieces 40
Availability Retired
1222-2 LEGO 1x1 Round Bricks
Retail $1.00
Value $43.67
Growth  +4267.0%
Annual growth 5.5%