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Thread: Meaning of letters in serial numbers.

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  1. #1
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    Meaning of letters in serial numbers.

    I just purchased a Auto-Ordnance 1911 A1, serial number AOC61XXX. My question is, what does the C indicate? I know it was made prior to Kahr purchasing the Auto-Ordnance name from Numrich.

    Thanks,

  2. #2
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    "Commercial"? "Classic"? "Christopher"?

  3. #3
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    Numrich is still in business, selling gun parts. Perhaps they could tell you.

    My first guess would be Auto-Ordnance Company
    Hawkmoon
    On a good day, can hit the broad side of a barn ... from the inside
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    Rick McC. (19th May 2021)


  4. #4
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    I looked at my West Hurley Auto Ordnance 1911, my serial numbers also start with AOC. If yours is the same as mine, above the serial number it is engraved with Auto-Ordnance Corp., underneath that is West Hurley, N.Y. and then beneath that is the serial number starting with AOC139XXXX. I think a safe bet is that the AOC is Auto-Ordnance Corporation. Hope this helps! These pistols get a bad rap with some justification I am sure. However, as I have posted here in the past, I have had mine since the 1980's and it runs flawlessly...go figure!

  5. #5
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    Thank you Gentlemen. Kahr is making some 1911s with a C in the model number, which is significant, so I was just wondering if the C was significant here.

    .45s r best - I purchased mine from a friend, he had it for several years and hadn't have any problems with it.

  6. #6
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    I also have a Kahr Auto Ordnance 1911, the serial number on that pistol begins with AOA. Who knows what that last "A" is for!

  7. #7
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    Finish? What finish are each of these pistols?
    Hawkmoon
    On a good day, can hit the broad side of a barn ... from the inside

  8. #8
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    Hello Hawkmoon: The West Hurley gun is blued, the Kahr Auto Ordnance gun is Parkerized. The West Hurley gun is listed as an Auto Ordnance Standard and the Kahr AO is listed as a WW2 PKZE. The Standard is a Series 70 gun and the other is a Series 80.

  9. #9
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    I wonder if the letter refers to the finish. I know Para-Ordnance used different letters for their carbon steel guns and for their stainless guns.
    Hawkmoon
    On a good day, can hit the broad side of a barn ... from the inside

  10. #10
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    That sounds reasonable, I also wondered if maybe it had something to do with production runs...did they pause and make a minor adjustment with either the pistol or machines used to make them?

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