In 1955, LEGO released 6 System i Leg Town Plan sets, all of these sets have been retired. For that year, the total price of all retail sets cost $17, today those sets are valued around $3,215, a growth of 18926%.
Most valuable 1955 LEGO System i Leg Town Plan set
1211-2 Small House Set $1,300.19
Largest 1955 LEGO System i Leg Town Plan set
1236-2 Garage 59 pieces
6 sets

1200 Town Plan Board Large Plastic

Theme / Subtheme System i Leg / Town Plan
Year 1955
Availability Retired
1200 LEGO Town Plan Board Large Plastic
Retail $4.25
Value $392.61
Growth  +9137.9%
Annual growth 6.6%

1210-2 Small Store Set

Theme / Subtheme System i Leg / Town Plan
Year 1955
Pieces 30
Availability Retired
1210-2 LEGO Small Store Set
Retail $3.00
Value $571.83
Growth  +18961.0%
Annual growth 7.7%

1211-2 Small House Set

Theme / Subtheme System i Leg / Town Plan
Year 1955
Pieces 22
Availability Retired
1211-2 LEGO Small House Set
Retail $2.00
Value $1,300.19
Growth  +64909.5%
Annual growth 9.6%

1212-2 Small House Left Set

Theme / Subtheme System i Leg / Town Plan
Year 1955
Pieces 21
Availability Retired
1212-2 LEGO Small House Left Set
Retail $2.00
Value $255.13
Growth  +12656.5%
Annual growth 7.1%

1213-2 Small House Right Set

Theme / Subtheme System i Leg / Town Plan
Year 1955
Pieces 21
Availability Retired
1213-2 LEGO Small House Right Set
Retail $2.00
Value $164.86
Growth  +8143.0%
Annual growth 6.4%

1236-2 Garage

Theme / Subtheme System i Leg / Town Plan
Year 1955
Pieces 59
Availability Retired
1236-2 LEGO Garage
Retail $3.65
Value $530.75
Growth  +14441.1%
Annual growth 7.3%