A lifelong inventor and builder, jon kinzenbaw has also been an avid collector for decades. Preview the jon & marcia kinzenbaw auction located in williamsburg, ia on nov 04, 2025 View and place bids on available equipment before the auction ends! Jon and marcia kinzenbaw are downsizing what might be one of the largest collections of tractors in the united states They are offering over 150 original and restored tractors. An upcoming auction featuring 125 classic tractors are coming from the collection of a person synonymous with farm equipment
Jon kinzenbaw, founder of kinze manufacturing and inventor of the modern grain cart, is selling off part of the collection he’s built since 1979. Iowa entrepreneur jon kinzenbaw is auctioning about 125 tractors from his personal collection of roughly 600 The collection, which began after rediscovering his father's old tractor, includes.
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