.A Siren, as mythlogoy points out, is a seductress whose song is irresistable. Parthenope was the most beautiful of the sirens who gave her life in the name of her love. Her body was said to have washed ashore at what is now Naples. Delta's Parthenope collection is eight pens deep. Each pen offering is perfectly balanced for long-term performance and legendary beauty. The Rollerball advances the easy-to-find refill with a simple quarter turn. The Fountain Pen features Delta's Millenium, 18kt Gold Nib. The cap threads at both ends of the barrel. Parthenope writing instruments are available in 4 epoch colors: Quartz White, Golden Blue, Tortoise Brown, and Coral red. The entire collection is accented in gleaming, Black resin with vermeil trim.