In 1976, LEGO released 1 Universal Building Set sets in the subtheme Supplemental, all of these sets have been retired.
Theme / Subtheme Universal Building Set / Supplemental
Year 1976
Pieces 31
Availability Retired
901 LEGO Universal Motor Set
Retail $23.99
Value $112.45
Growth  368.7%
Annual growth 3.3%