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  1. #1

    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    Can someone please offer information about the Waltham Model 1870, Series B? This watch is KW and KS from the back, which seems to be rare for Waltham watches.

    Also, I am looking for one (either for parts or in less than perfect condition).

    Thank you,

  2. #2

    Default Waltham Model 1870 Series B

    Can someone please offer information about the Waltham Model 1870, Series B? This watch is KW and KS from the back, which seems to be rare for Waltham watches.

    Also, I am looking for one (either for parts or in less than perfect condition).

    Thank you,

  3. #3
    Technical Admin Tom McIntyre's Avatar
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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    There is only one Waltham Model 1870 but it came in a variety of winding and setting mechanisms including wind and set from the back. Other than the differences in the winding and setting all the models are the same.

    You can find a number of different ones displayed from this web page. http://www.awco.org/AWCo/interesting.htm
    Tom McIntyre Click me.
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  4. #4
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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    It was an error in the Waltham cat

  5. #5

    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    <BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Jon Hanson:
    It was an error in the Waltham cat </div></BLOCKQUOTE>
    Could you please explain what you mean by this?
    Thanks,

  6. #6
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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    there are grades 1870 A and B and one has a low production listed at 2500 but both grades are identical

  7. #7
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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    This model watch is the only production full plate wind and set from the back 18s full plate--others are 3/4 plate.

  8. #8
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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    tagline--these are not rare as 17500 (all types) were made; however, originally cased ones are popular and sought after by collectors. Gold cased ones in top shape might be termed rare, depending on the survival rating one uses. High conditioned ones (near new or unworn, esp in silver) are scarce and this heavy watch took a beating over the years with plenty of use. Many years ago at the Drawbridge regional I acquired a virtually new one from Jeff Hess which I still have.

  9. #9
    Registered User Jerry Treiman's Avatar
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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    The error in the serial number list derives from an earlier model designation system used by Waltham. In their 1885 material list the different models are designated as Series with different letters. The Series A later became known as the 1857 model. Series B (Crescent St.) later was designated as the 1870 model. Series C and D were later the 1877 and 1879 models. When the later serial number list was compiled the 1870 model also continued to carry the "B" designation. For some reason the compiler designated some of the production runs as Series A -- this was the error.
    Jerry Treiman, NAWCC member since 1971
    Charter member of Pocket Horology Chapter 174

  10. #10
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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    Casewise KWs in GF are the rarest of this model and I have yet to see one in super condition.

  11. #11
    Technical Admin Tom McIntyre's Avatar
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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    I need to make some better pictures of this one, but I consider it in good to better condition. It is a Ladd case. The watch is at 1st run 1870. The dial does have a hairline near the 7 figure.

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  12. #12
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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    add: I believe the OF to be more scarce and desirable.

    New collectors--BEWARE of recases!

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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    Tom,

    Before you attempt a dial "switch" or upgrade remember that the dial feet are different on 1870 model movements than on 1857 model Walthams!:biggrin:

  14. #14

    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    Is it safe to assume that a 70 found without a case can be or could have been either Open Face or Hunter?

    Any other clues?

    Thanks.

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    Default Waltham Model 1870 Series B (RE: Thomas Tallant)

    Yes, Whit, as long as it is a Key Wind mov't--all SWs were Hunting style.

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