Parker 61 Instant Ink - ca. 1961. General consensus amongst the Parker gurus is that these are far more rare than the Parker 61 pens they're designed to be used with! Rarity does not always equate to expensive and these are much less than a Parker 61 fountain pen! Parker Instant Ink is a Super Quink Ink concentrate for use with the Parker 61. The idea was to plug the Instant Ink cartridge onto the end of the capillary filler, dunk in water, let it mix with the ink and feed into the pen. Ink cartridge is still sealed in the package. I doubt the ink concentrate is still usable, but I'll leave that for you to try if you decide to do so! Most of package is missing, ink cartridge intact. (10 avail)