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    U.S. Army MI-I-5 Optical Gas Mask

    The U.S. MI-I-5 Optical Gas Mask was developed by the Army for use with optical sighting devices.  The distance between the small circular eyepieces could be adjusted to accomodate different instruments and head sizes.  The filter clips to the head harness behind the user's head, with two hoses drawing air up towards the eyepieces.  It was produced in both black and gray (green) rubber.  Both of these examples were made by Acushnet, in 1940 and 1941 respectively.

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    Similar masks in my collection:  U.S. NDO Mk I, U.S. ND Mk III, U.S. ND Mk IV

    Rubber stamp
    Rubber stamp
    Manufacturer and date stamp on chin of black MI-I-5
    "LOT 75
    Acushnet
    M6
    10-40"
    Rubber stamp
    Rubber stamp
    Stamp on flutter valve of black MI-I-5
    "N-2
    CR Co
    1-41
    227"
    Rubber stamp
    Rubber stamp
    Manufacturer and date stamp on chin of green MI-I-5
    "Lot W109
    Acushnet
    M2
    1-41"
    Rubber stamp
    Rubber stamp
    Stamp of flutter valve of green MI-I-5
    "O S
    P-86-1
    2-41"
    Carrier
    Carrier
    Bag for "Optical Gas Mask M1"
    Carrier
    Carrier
    Markings on inside flap of bag
    "E II R2
    E.A.E.
    LOT 53"
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