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    Re: CP-300/U USAF Star Finder
    From: Dave Walden
    Date: 2021 Feb 9, 09:39 -0800

    COMPUTER, AIR NAVIGATION

    CELISTIAL AZIMUTH

    TYPE CP-300/U 

    F/S 6606-557-0778

    Allegheny Plastics, Inc.

    Mfg. Part No APAF-31

    AF 36 (600) 9047

    U.S. Property

    It has 9 disks and no month markings.  The disks, which are full circles fit very (almost too) tightly UNDER to cursor arm. They are held quite tightly to the base. (I am surprised yours move around.)

    ((What are the concealed markings, and why are they covered on yours?))

    It's similar to the 2102-D.  I think Gary has written a comparison.  The 300 is noticibly heavier due to the two extra base disks.

    Mine also came from ebay some years ago.

    See attached photo.

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