Caterpillar Model PA1-PA13516
Mfg. Dates 7/1/25-12/30/31
Weight 20500lbs.
Gauge 72″
Drawbar HP 65
Belt/PTO HP 77
Cylinders bore and stroke 4@ 6-1/2″x8-1/2″
RPM 650
Fuel Cap. 70 gals.
1925 2236A-2965A
Changed from Best after Serial Number 2547
2554 A Orman Haenggi
2573 A Orman Haenggi (Former Heidrick Museum, CA, USA)
2581 A Hamel Family, Klamath Falls, OR, USA
2670 Traynham Ranches, Arbuckle, CA, USA
2678 A Former Bud Roberts, MO, USA
2709 A Peter Proposch, Queensland, Australia
1926 2966A-3685A
3053 A Former Heidrick Tractor
3145 A Bill Aloia, West Orange, NJ, USA Canopy, Diesel
3331 A Dave Smith, Woodburn, OR, USA Canopy, Lights, Pull Hook
3368 A Phillips Family
3518 A Russell Turner, Orangeville, CA, USA
3530 A Mike Staples, Lodi, CA, USA
3548 Traynham Ranches, Arbuckle, CA, USA
3580 A Mike Staples, Lodi, CA, USA
3635 Traynham Ranches, Arbuckle, CA, USA
1927 3686A-4034A
3702 A Frank Buck, Gettysburg, PA, USA Canopy, Lights
3921 A Scott Moulding, Ogden, UT, USA Diesel conversion, 8800 engine (Former George Howard)
3927 A Mike Staples, Lodi, CA, USA
3955 A Doug Peltzer, Porterville, CA, USA
4017 A Doug Peltzer, Porterville, CA, USA
1928 4035A-4589A
4101 A Piet Verschelde, Belgium
4232 A Jack Wallace, Woodland, CA, USA
4253 A Jack Wallace, Woodland, CA, USA
4258 A Jack Wallace, Woodland, CA, USA
4315 A Jack Wallace, Woodland, CA, USA
4359 A Mahan, Canterbury, New Zealand
4397 Traynham Ranches, Arbuckle, CA, USA
4400 A Tom Madden, Paso Robles, CA, USA
1929 4590A-5149A
4641 A Tom Madden, Paso Robles, CA, USA
4793 A Randy Moulding, Odgen, UT, USA
4795 A Tom Madden, Paso Robles, CA, USA
4914 A Omnitrac Cove, OR, USA
4915 A Doug Veerkamp, Placerville, CA, USA
5076 A Doug Veerkamp, Placerville, CA, USA Diesel
5113 A Doug Veerkamp, Placerville, CA, USA
1930 5150A-5532A
5175 A Antique Mechanic Club UC, Davis, CA, USA
5221 A Matakohe Museum, North Island, New Zealand
5305 A Antique Mechanic Club UC, Davis CA, USA
5347 A Antique Mechanic Club UC, Davis CA, USA
5381 A Antique Mechanic Club UC, Davis CA, USA
5470 Omnitrac Cove, OR, USA
5479 A Yearbury Cambridge, New Zealand
5504 A Antique Mechanic Club UC, Davis, CA, USA
5518 A Randy Moulding, Odgen, UT, USA
1925 PA1-PA18
1926 PA19-PA1301
PA 322 Brendt Manawatu, New Zealand
PA 545 Roger Martin, OH, USA
PA 1085 Bob Kroeker, Round Rock, TX, USA
1927 PA1302-PA2825
PA 1196 Omnitrac Cove, OR, USA
PA 1354 Jermey Williams, Piedmont, SD, USA
PA 1333 Lane Stamper, Leavenworth, KS, USA
PA 1518 ACMOC Chapter 1, CO, USA
PA 1766 Dan Voght, Hantford City, IN, USA
PA 1814 Billy Saunders, VA, USA
PA 2125 Jon Mark Horta, Atwater, CA, USA
PA 2670 Traynham Ranches, Arbuckle, CA, USA
PA 2691 Dave Wintermute, Annandale, NJ, USA Restored with cab
PA 2775 William Aloia, Livingston, NJ, USA Canopy
1928 PA2826-PA5137
PA 3003 Neil Clydsdale & Greg Miller, Vic, Australia Euclid blade from factory
PA 3548 Traynham Ranches, Arbuckle, CA, USA
PA 3549 Patrick Yankelunas, Youngstown, NY, USA
PA 3597 Omnitrac, Cove, OR, USA
PA 3635 Traynham Ranches, Arbuckle, CA, USA Parts Machine
PA 4397 Traynham Ranches, Arbuckle, CA, USA Parts Machine
PA 4616 Former Sylvester, Tractor
PA 5037 Neil Clydsdale, Vic, Australia Cold weather cab, PTO
1929 PA5138-PA8640
PA 5376 Omnitrac, Cove, OR, USA
PA 5534 Tom Lelmorini, CA, USA (Former Antique Mechanic Club UC, Davis, CA, USA and Former Bud Roberts Estate)
PA 5599 Marin Hicks, S.W. Mantioba, Canada
PA 5673 David Shearns, Marion, NY, USA Canopy
PA 6193 Ken Eder, Carthage, NC, USA
PA 6330 USA
PA 6446 Antique Mechanic Club UC, Davis, CA, USA
PA 8573 Marc Geerkens, Belgium
PA 8619 David Wintermute, Annandale, NJ, USA Cable Blade
1930 PA8641-PA12498
PA 9168 Gib and Bill Thurman, Adrian, MO, USA (Former Wendell Stegner, Harrisonville, MO, USA)
PA 9223 Scott Hayes, Molalla, OR, USA
PA 9411 Phil Thompson, Harper, KS, USA
PA 9498 Baxter Family, Warren, OH, USA
PA 9501 Omnitrac, Cove, OR, USA
PA 9573 Omnitrac, Cove, OR, USA
PA 9825 Former Don Clough, Gardiner, ME, USA
PA 9929 Ken Eder, Carthage, NC, USA
PA 9935 Peter Proposch, Queensland, Australia
PA 9997 Peter Thomas, Sropshire, UK, USA
PA 10187 Don Martin, Alexandria, OH, USA Canopy
PA 10288 Former Bud Roberts, MO, USA
PA 10804 Salem, OR, USA
1931 PA12499-PA13516
PA 12761 Pete Ochal, Arcade, NY, USA Canopy
PA 12943 Lyman Knapp, Blackwell, OK, USA
PA 13230 Ken McCrary, Davenport, CA, USA
PA 13275 Omnitrac, Cove, OR, USA
PA 13424 Moulding Collection, Ogden, UT, USA (Former Holden Family, Lebanon, OH, USA)
PA 13515 Frank Dzen, South Windsor, CT, USA Pull Hook
UnKnown Serial Number Tractors
1927 UnK Bob Pearce, Yankee Hill, CA, USA
1928 UnK Mhmke Farm Museum, MT, USA
UnK Roots of Motive Power, Willits, CA, USA
1929 UnK UC Davis, Davis, CA, USA Canopy, Factory red color
UnK UC Davis, Davis, CA, USA
UnK Bob Hill, Miami, MB, USA
UnK Ken Eder, Carthage, NC, USA
UnK Ken Eder, Carthage, NC, USA
UnK James Owensby, Cochranville, PA, USA
UnK David Wintermute, Annondale, NJ, USA
UnK Gary Foglio, Florence, OR, USA
UnK Koskela Family, Astoria, OR, USA
UnK Randy Moulding, Odgen, UT, USA Belt pulley
Mfg. Dates 8/1/31-12/30/32
Weight 24390 lbs.
Gauge 72″
Drawbar HP 63
Belt/PTO HP 75
Cylinder bore and stroke 4@6-1/8″x9-1/4″
RPM 700
Fuel Cap. 75 gals.
Diesel Tractors
1931 1C1-1C2
1 UC Davis, Davis, CA, USA
2 Heidrick AG Museum, Woodland, CA, USA
12 ACMM Museum, Brooks, OR, USA
Model name was changed to 65 after 1C15 but 1C12 has last known cast Sixty Radiator ID
