Jon Kinzenbaw to Sell 100+ Antique Tractors From His Private Collection in Iowa
- Media Logic Radio
- Oct 8
- 5 min read
By Natalina Sents Bausch Published on October 8, 2025
Jon and Marcia Kinzenbaw of Williamsburg, Iowa, are beginning to downsize their extensive collection of antique tractors with an online auction scheduled for Nov. 4, 2025. A lifelong inventor and builder, Jon Kinzenbaw has also been an avid collector for decades.
Many of these tractors have been stored inside, include like-new tires, and have been started regularly. This is the first time any of this collection has been offered for sale. Offerings range from pre-WWII iron to mid-20th century icons.
About 35 non-running parts tractors and several lots of original tires will be sold as well. About 20 late model items from the Kinze & Blue Equipment factory and a fleet of side-by-sides are also included in the catalog.
The no-reserve auction includes more than 200 lots in total. The full sale catalog is available here.
An open house will be held at 2148 PP Ave, Williamsburg, IA 52361 on Monday, Oct. 27 to Thursday, Oct. 30 from 9 a.m. to 3 p.m. to preview auction items. Tours of the larger Kinzenbaw tractor collection will not be available at this time.
Sullivan Auctioneers, a BigIron company, will handle the sale on behalf of the family. Auctioneer Matt Sullivan explained, “We’ve been in the auction business for 46 years. My family has sold a lot of cool things, and even sold Jon some of these tractors, so this is kind of a fun story to tell.”
The sale has drawn interest from “coast to coast,” said Sullivan. He expects collectors and “farmers that always wanted to have a tractor that they grew up with” to participate.
Sale Details
Bidding closes Nov. 4, 2025
All items are in Williamsburg, Iowa, a short distance from the Tanger Outlet.
Load out will be Wednesday, Nov. 5 to Friday, Nov. 7 from 8 a.m. to 4:00 p.m. Shipping options are available.
Diverse Catalog
The sale catalog boasts a diversity of brands rarely seen at a collector’s auction. Red, orange, green, gray, and blue iron are up for sale. At least 14 manufacturers ranging from staples like John Deere and International to lesser known brands like Ota and Honeybee are on the list.
Ryan Roossinck, digital marketing specialist for Tractor Zoom, previewed the auction during an exclusive video shoot with Successful Farming. He’s been following antique tractor sales for a decade. “This is definitely the largest auction lineup I’ve ever gotten the chance to look over prior to auction day,” he said.
Sullivan echoed, “150 tractors that are that nice on one auction, that’s a lot.”
Roossinck was surprised as he toured the Kinzenbaw’s property. “Prior to seeing the collection, I was under the impression that Jon’s collection was predominantly John Deere, and that’s not the case. You’ll see a very wide variety of makes and models on this sale. It’s definitely among the more diverse sales I’ve previewed,” Roossinck said. “Jon’s got a keen eye for quality.”
In addition to the range of brands and models, condition varies across the catalog, too. Restored and original machines will be sold. “There’s something for everybody,” Sullivan said.
“I was surprised to see how many tractors were in their original work clothes. Most of the photos I’d seen of Jon’s collection showed restored tractors. There are a lot of collectors that really value that originality and they’re willing to pay for it,” Roossinck said.
Brand Breakdown
Here’s a closer look at some of the brands and models that will be hitting the auction block Nov. 4.
International
There are 52 classic red tractors in the listing including several Farmall Super Ms from the mid 1950s.
The IH Farmall 1206 2WD tractor is among Sullivan’s favorites, he said. The 1966 tractor boasts turbo diesel with 6,813 hours showing.
Related: International’s Engineering Genius
John Deere
More than 20 pieces of John Deere iron are in the Kinzenbaw catalog. Models range from a couple of 2WD models from 1937 to a 2011 X700 Ultimate Lawn Mower with 388 hours showing. Three John Deere combines are also destined for the auction block.
A John Deere 4020 “that’s a hydraulic front wheel assist with the biggest tires on I’ve ever seen” stands out to Sullivan. It has just 2 hours showing on the time counter.
A 1937 John Deere B appears to be the oldest tractor included in the sale. With over 303,000 produced, the company built more of the model B than any other tractor in their product catalog.
“Unstyled John Deere Bs like this one were tested at 11.80 drawbar horsepower, and 16.01 horsepower on the belt,” Roossinck explained.
The one selling Nov. 4 is an unstyled model with a hand crank. “These engines are typically referred to as ‘all-fuel’ and they’ll burn gas, kerosene, or other low-octane fuels that were common back then,” Roosinck said.
“They don’t run all that great on moonshine, but you can get them to run on it!”
New front and rear tires are included.
Allis-Chalmers
The auction catalog features 10 vintage Allis-Chalmers machines, including a 1947 grader equipped with a 10-foot moldboard blade. This gas machine has a 5-speed transmission and new tires.
Massey Ferguson
A Massey Ferguson 1130 narrow front, open station tractor also caught Sullivan’s attention. “I don’t know if I’ve ever seen one,” he said.
The diesel machine has 4,220 hours showing. It is equipped with two hydraulic outlets, 540 PTO, and a 3-point. The listing notes both the front and rear tires are unused.
Kinze
A handful of equipment from Kinze & Blue Equipment factory, including grain carts, planters, and Mach-Till units, have been added to the sale. All of them are less than five years old.
Can-Am
Seven Can-Am UTVs have been consigned by Ryan and Susie Veach, the Kinzenbaw’s daughter and son-in-law. All the vehicles are five years old or newer and are equipped with a winch. There are Outlander and Defenders available. The 2022 Defenders include doors, heat and air conditioning, power windows, turn signals, radios, and a LED light bar.
Odd Balls
A 1981 Kawasaki KZ1000 Police Issued Motorcycle will be sold. The bike includes hard saddle bags and has 14,413 miles showing.
An Argo 8-wheel amphibious ATV is listed on the sale. It’s powered by a 23 hp V-Twin engine and has a two speed transmission. The ATV is also equipped with a winch and roll bar.
Three old John Deere combines are listed in the sale catalog. The 1963 55 model includes a 12-foot grain platform and corn head.
How an Online Timed Auction Works
In an online auction, the order of the sale and times of specific lots closing are set. Registered potential buyers can place bids any time before the closing deadline.
“If you know you want that 1206 tractor, there’s a countdown. You know that in one hour and 22 minutes that tractor is going to sell,” Sullivan said.“If you want to watch all day, you can, and if you don’t and there’s just a couple particular items you’re interested in, you can set a time or reminder.”
If multiple bidders are actively bidding when an item is set to close, extended bidding will go into effect. When the timer runs out and no further bids are placed, the highest bid wins.
Sullivan also explained you have the opportunity to bid on all like items. For example, there are several John Deere 4020s on the sale. “If you don’t get the first one, or it brings more than you want, you’ll still have a shot at number two, three, and four.”
