810-3 Gears was a 114 piece Universal Building Set set released in 1974. It includes a play mat for leaning on and to use as a template, several LEGO pieces to make a town with, and vehicles.

Sets in Universal Building Set / Gears

Theme / Subtheme Universal Building Set / Gears
Year 1974
Pieces 177
Availability Retired
811-2 LEGO Gear Set
Value $451.68
Theme / Subtheme Universal Building Set / Gears
Year 1972
Pieces 163
Availability Retired
803-2 LEGO Gears, Bricks and Heavy Tires
Theme / Subtheme Universal Building Set / Gears
Year 1970
Pieces 120
Availability Retired
800 LEGO Gears, Motor and Bricks
Retail $4.89
Theme / Subtheme Universal Building Set / Gears
Year 1970
Pieces 115
Availability Retired
801 LEGO Gear Set
Retail $4.95
Value $79.28
Growth 1501.6%
Annual growth 10.0%
Theme / Subtheme Universal Building Set / Gears
Year 1974
Pieces 100
Availability Retired
813-2 LEGO Gears Tractor
Retail $2.89
Value $84.13
Growth 2811.1%
Annual growth 7.4%
Theme / Subtheme Universal Building Set / Gears
Year 1974
Pieces 60
Availability Retired
812-2 LEGO Gear Set
Value $11.03
Theme / Subtheme Universal Building Set / Gears
Year 1970
Pieces 30
Availability Retired
802 LEGO Gear Supplement
Value $56.89