In 1979, LEGO released 12 Technic sets in the subtheme Supplementary, all of these sets have been retired. For that year, the total price of all retail sets cost $246, today those sets are valued around $4,092, a growth of 1564%.
Most valuable 1979 LEGO Technic set
857 Motorbike with Sidecar $1,455.99
Highest growth 1979 Technic set
877 Steering Gear Parts +2971.14%
Largest 1979 LEGO Technic set
955 Mobile Crane 512 pieces
Most owned 1979 Technic set
856 Bulldozer
12 sets

856 Bulldozer

Theme Technic
Year 1979
Pieces 372
Availability Retired
856 LEGO Technic Bulldozer
Retail $35.00
Value $877.37
Growth  +2406.8%
Annual growth 7.1%

857 Motorbike with Sidecar

Theme Technic
Year 1979
Pieces 409
Availability Retired
857 LEGO Technic Motorbike with Sidecar
Retail $49.50
Value $1,455.99
Growth  +2841.4%
Annual growth 7.5%

874 Yellow Beams with Connector Pegs

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 38
Availability Retired
874 LEGO Technic Yellow Beams with Connector Pegs
Retail $5.00
Value $27.64
Growth  +452.8%
Annual growth 3.7%

875 Red Beams with Connector Pegs

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 38
Availability Retired
875 LEGO Technic Red Beams with Connector Pegs
Retail $5.00
Value $20.63
Growth  +312.6%
Annual growth 5.0%

876 Blue Beams with Connector Pegs

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 38
Availability Retired
876 LEGO Technic Blue Beams with Connector Pegs
Retail $5.00
Value $19.97
Growth  +299.4%
Annual growth 3.0%

877 Steering Gear Parts

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 24
Availability Retired
877 LEGO Technic Steering Gear Parts
Retail $3.50
Value $107.49
Growth  +2971.1%
Annual growth 7.6%

878 Piston Parts

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 52
Availability Retired
878 LEGO Technic Piston Parts
Retail $4.50
Value $33.19
Growth  +637.6%
Annual growth 4.3%

879 Gear Wheels with Chain Links

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 87
Availability Retired
879 LEGO Technic Gear Wheels with Chain Links
Retail $4.50
Value $111.41
Growth  +2375.8%
Annual growth 7.1%

880 12 Volt Motor

Theme / Subtheme Technic / Supplementary
Year 1979
Pieces 22
Availability Retired
880 LEGO Technic 12 Volt Motor
Retail $19.99
Value $39.99
Growth  +100.1%
Annual growth 5.3%

950 Forklift

Theme Technic
Year 1979
Pieces 208
Availability Retired
950 LEGO Technic Forklift
Retail $29.99
Value $527.16
Growth  +1657.8%
Annual growth 6.3%

951 Bulldozer

Theme Technic
Year 1979
Pieces 372
Availability Retired
951 LEGO Technic Bulldozer
Retail $35.00
Value $496.36
Growth  +1318.2%
Annual growth 5.8%

955 Mobile Crane

Theme Technic
Year 1979
Pieces 512
Availability Retired
955 LEGO Technic Mobile Crane
Retail $49.00
Value $374.85
Growth  +665.0%
Annual growth 4.4%