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Thread: 18Pr Mk II case

  1. #1
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    18Pr Mk II case

    First time i see that repared primer
    20190520_152430.jpg20190520_152603.jpg20190520_152610.jpg

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    Burney Davis (25th May 2019), Dandebur (26th May 2019), Snufkin (25th May 2019), TimG (25th May 2019)

  3. #2
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    Repair (and conversion) of primers was carried out by quite a lot of firms, including R A Lister & Co. Ltd, as per attached.



    Tom.
    Attached Images Attached Images

  4. #3
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    I've never seen a No. 1 Mk II primer with 4 tool slots. It's stamped Mk IIC?

  5. #4
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    The primer was made by EWBCo - E W Bliss & Co in the United States, and there is a 5/16 date at 6-7 o'clock which is likely the manufacturing date. Significant numbers of US-made fuzes and primers were found to be defective and required rectification or conversion in the UK before finally being filled, and this primer seems to be one of them.

    The repair/conversion was carried out by RAL - RA Lister & Co. Ltd; the contract details, attached above, dated 19/7/16 and 5/4/17 show repair and conversion contracts. The No.1 II is over stamped No.1 IIC (converted) and there is a corresponding repair/conversion date of 8/17 at 6 o'clock. Finally the primer was filled at National Filling Factory No.5 (Gloucester) in 11/17, the date stamped over the RAL mark.

    As for the two extra key slots, ToA 1915 states for repair of No.1 MkII primers, "fresh key slots will also be prepared if necessary".

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  7. #5
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    Tom,

    Although it was convention for the subcontractor's monogram or trademark to follow the contractors, I would be surprised if Bliss did make the primer. Bliss, along with American Locomotive Company (ALCO) and Bethlehem Steel Company (BSC) subcontracted out a great deal of work. The United States Cartridge Company (US) on the other hand are known to have been subcontractors to both ALCO and BSC

    United States Cartridge Co, acquired?by Winchester, acquired by Olin.

    TimG
    Last edited by TimG; 26th May 2019 at 10:57 AM.

  8. #6
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    Tim,

    I agree, Bliss as prime contractor with US Cartridge Co. as sub contractor actually making the primer. I was focussed on the EWBCo part of the monogram while ignoring the US part.



    Tom.

  9. #7
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    Many thanks to Snufkin. I don't knew before that on a primer N°I/IIC ( in fact a N°I/III), the C was for converted.
    Primers with foor tool slots are very rare. All I have (except one) are II converted IIC by RAL on 18 Pr Mk II cases.
    I try to separate the different markings but I don't guarantee my explanations.
    1) (N°I/II no more visible) HS 5/16; KN 9/16; N°I/IIC RAL 6/17; F5 9/18.
    2) N°I/IIA B 2/16; N°I/IIC RAL 6/17; F5 11/17.
    3) N°I/II us EWBCO LOT 609 4/15; N°I/IIC RAL 9/17; F2 /6/18 and B?
    4) N°I/II polar bear 16 Ccrossed 104 broad arrow in a C; N°I/IIC RAL 6/17; F5 10/17.
    5) On a 4.5 INCH MkI. N°I/II R broad arrow L (barred out) 5/15 (barred out); VSM A 7/16.
    So primers with four tool slots were not all made by RAL.
    Dandebur.1.jpg2.jpg3.jpg4.jpg5.jpg

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