LEGO 3 Basic Set is a vintage Universal Building Set set from 1973 valued at $196 for new and sealed sets, up 2354% from an original retail price of $7.99. Annual appreciation has averaged 3.01% since release. Used copies are valued between $18 and $73 depending on condition.
LEGO 3-4 Basic Set is a Universal Building Set / Basic Set released in 1973, containing 184 pieces. The set includes a selection of black, red, blue, and white basic bricks, along with small wheels, red door and window elements, shutters, and trans-clear bricks for simple vehicle and building models. It also comes with a large green 10 x 20 baseplate with cross supports, which was a common structural element in early 1970s basic sets. This version was released exclusively in Europe, the UK, Australia, and Canada, and it is equivalent to sets 78 Basic Set and 115 Building Set.
A new and sealed Basic Set is currently valued at around $196, with annual growth of approximately 2%, which is lower than other Basic Set sets. The average used price is $43 for those in good overall condition. Based on current trends, this set could be valued near $202 within the next year.