These are some very old Eagle mechanical pencils (or leadholders):
They are called Eagle Automatic, or they appear to be that brand. (The last three have no visible name but have Eagle patent dates imprinted on metal parts.) The model numbers of the first and third appear to be 802 and 865.
Here is a box label:
I find it interesting that there seem to be differently labeled pencils for different leads, even though the pencils holding the leads may be otherwise identical. Maybe the clutch is slightly different for different leads, or maybe it is simply (if somewhat extravagantly) to help the user identify the lead. Experts?