I got this ink with a dip pen that my late family friend gifted to me for Christmas back in 2007. The other side of the bottle says Delta Italy 1982. I know there was a limited edition pen but I really can't find anything on this ink. I have used it a few times with my dip pen but haven't tried it out with any of my fountain pens and was curious if anyone on here had tried it or used it. How rare or scarce is it? Thanks!