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H3/HD3 Missing serial number
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CJWJ View Drop Down
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Joined: 27 Jul 2025
Location: 12758
Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CJWJ Quote  Post ReplyReply Direct Link To This Post Topic: H3/HD3 Missing serial number
    Posted: 27 Jul 2025 at 1:58pm
I've looked all over my H3/HD3 Allis Chalmers for a serial number but cannot find anything that correlates to a serial number. I'm sure this tractor was made in the 1960s but I can't find any indication of the number of hours on the machine. Sharing this photos in case anyone understands what it means -- DC23S is imprinted on the right side (pictured). 11913 is engraved on a plate behind the blade. GDN16802 F on the muffler or exhaust.. Hoping to list this for sale.
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wade89 View Drop Down
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Points: 220 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wade89 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jul 2025 at 2:05pm
That’s a casting number. The serial is stamped into the bell housing of transmission where it bolts to the engine. Should be on upper left side as you sit on it.
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CJWJ Quote  Post ReplyReply Direct Link To This Post Posted: 14 hours 8 minutes ago at 12:58pm
I think I found it—H-2296-R -- still unclear on if it is a 1961 or 1962.
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Points: 21743 		Post Options Post Options   Thanks (1) Thanks(1)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 13 hours 52 minutes ago at 1:14pm
1961 build
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Points: 1046 		Post Options Post Options   Thanks (0) Thanks(0)   Quote im4racin Quote  Post ReplyReply Direct Link To This Post Posted: 8 hours 49 minutes ago at 6:17pm
That is the engine number
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Points: 21743 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 6 hours 19 minutes ago at 8:47pm
Chassis s/n began at 1001.  Gas engine s/n for an H-3 also began at 1001. So, figuring there weren't many HD-3 diesel engines built, it still probably makes it a 1961 chassis build. 1962 models started at 3199. I don't think they made 900 diesel versions in 1961. But who knows? Maybe the HD-3's had chassis serial numbers all their own?

Edited by DrAllis - 6 hours 10 minutes ago at 8:56pm
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