This is a mint example of the Parker 61 Custom Insignia Fountain Pen. Both cap and barrel are finished in rolled gold, the section is Rage Red. It started life as a Capillary filler but it has been converted to the Cartridge / Converter type with a new brass connector which is far stronger than the original plastic version. The pen dates from around 1964.
The pen is in excellent condition and has seen very little use. It is fitted with a lovely smooth Medium nib.