Pelikan M600 Green o' Green Special Edition, M620 18K Medium, inked with Bookbinders Snake Ink Blue Coral
The M600 Green o' Green is one of more solemn M600 special editions that I own. I personally quite like its restrained colour and pattern.
This old 18K medium nib is problematic. It has a fault where the tines are slightly too wide apart that causes it to be a hard starter that gushes. Looking back at the history of use of this nib it has worked well with Noodler's inks (which tend to be drier). It has not worked well with this current ink.
This lovely blue ink is not shown at its best from this nib. This ink shades lovely but there is no sheen to be seen.