In 1969, LEGO released 4 Universal Building Set sets across 2 subthemes, all of these sets have been retired. Subthemes for that year included Basic Set and Supplemental. For that year, the total price of all retail sets cost $75, today those sets are valued around $4,557, a growth of 5940%.
Most valuable 1969 Universal Building Set set
088 4.5V Super Set $3,468.20
Highest growth 1969 Universal Building Set set
990-2 Trees and Signs +13057.60%
Most owned 1969 Universal Building Set set
103 4.5V Motor Set with Rubber Tracks
4 sets

088 4.5V Super Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1969
Pieces 615
Availability Retired
088 LEGO 4.5V Super Set
Retail $59.99
Value $3,468.20
Growth  +5681.3%
Annual growth 5.9%

103 4.5V Motor Set with Rubber Tracks

Theme / Subtheme Universal Building Set / Supplemental
Year 1969
Pieces 32
Availability Retired
103 LEGO 4.5V Motor Set with Rubber Tracks
Retail $7.25
Value $166.13
Growth  +2191.4%
Annual growth 5.7%

140-2 Bricks 'n Motor Set

Theme / Subtheme Universal Building Set / Basic Set
Year 1969
Pieces 96
Availability Retired
140-2 LEGO Bricks 'n Motor Set
Retail $6.95
Value $757.85
Growth  +10804.3%
Annual growth 8.6%

990-2 Trees and Signs

Theme / Subtheme Universal Building Set / Supplemental
Year 1969
Pieces 13
Availability Retired
990-2 LEGO Trees and Signs
Retail $1.25
Value $164.47
Growth  +13057.6%
Annual growth 5.8%