HERO 4-4-0 AEROMETRIC Fountain Pen in Grey custom but push paint into all

but push paint into all of the diamond corners

The tip looks bent

These were intended to be used for mailing Waterman pens to repair stations in New York

It's blue in color

This tool makes it unnecessary for you to poke the plunger shaft around trying to find the hole that goes through the rear of the barrel/seal while inserting the threaded tip of the plunger back through the seal

HERO 4-4-0 AEROMETRIC Fountain Pen in Grey custom but push paint into allAEROMETRIC FILLING SYSYTEM. PEN HAS LOVELY INLAY WORK ON SHELL. The front end off this one smacks of a cross between a 5th Avenue and a 61. A refreshing approach for Hero, getting away from their 51 approach.