LEGO 107 4.5V Reversible Power Unit is a vintage Samsonite set from 1971 valued at $405 for new and sealed sets, up 3602% from an original retail price of $10.95. Annual appreciation has averaged 6.79% since release. On the used market, values range from $54 to $66 based on condition.
LEGO 107-3 4.5V Reversible Power Unit is a Samsonite Model Maker set released in 1971, containing 16 pieces. It includes a 4.5V motor with two wheel assemblies and a battery case designed to power compatible builds. The unit operates on three C-size batteries and enables forward and reverse motion. Issued under the Samsonite license for the North American market, it served as a motorization accessory for Model Maker-era vehicles and trains. Based on current trends, this set could be valued near $431 within the next year.
4.5V Reversible Power Unit (107-3) is a very old and rare LEGO set. It has not been available online or in retail stores in good/new condition for over 2 years. Because of its scarcity, the current estimated value of in new condition of $405.36 may be much lower than its true market value. Released in 1971, sealed sets in good condition are especially difficult to find, often commanding a premium well above estimates.
There are currently no new/sealed listings available for 4.5V Reversible Power Unit at this time.
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