LEGO 951 Bulldozer is a vintage Technic set from 1979 valued at $428 for new and sealed sets, up 1123% from an original retail price of $35.00. Annual appreciation has averaged 5.48% since release. Used copies are valued between $182 and $233 depending on condition.
LEGO 951-1 Bulldozer is a Technic set released in 1979, containing 372 pieces. It is the U.S. version of set 856 Bulldozer, which was sold in Europe under the Technical Set series, while 951 was issued in the United States as an Expert Builder set. The model builds a tracked bulldozer with a front bucket operated by interconnected rack-and-pinion mechanisms, including a rear hand crank that lifts the bucket from ground level to a near-vertical position and tips it forward. It uses traditional studded construction for the body, functional linkages for the bucket assembly, a specialized bucket side element, and 106 track links wrapped around 40-tooth gears.
A new and sealed Bulldozer is currently valued at around $428, with annual growth of approximately 5%. The average used price is $194 for those in good overall condition. Based on current trends, this set could be valued near $452 within the next year.