Eagle Prestige paddle filler

This is basically a bulb filler with a concealed bulb that is compressed by a short paddle or toggle. The ink is stored in a transparent inner reservoir. The outer barrel is translucent to allow viewing of the ink level. The design was touted to insulate the ink reservoir from hand warmth and therefore prevent blobbing of ink. The barrel even contains small holes with grommets to facilitate equalization of pressure during warming.