This is a beautiful Conway Stewart "27" fountain pen made in about 1952 and finished in a very attractive red herringbone pattern.  The pen measures 5.15" (131mm) capped and 4.60" (118mm) uncapped.  It is fitted with a splendid 14ct gold open nib with a medium tip.  It is in excellent condition and is a very good writer.
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This is a charming example of the Conway Stewart "Dinkie" 540 range. Made in England between 1931 and 1942 there were many iterations of this model, with a large variety of colours, cap styles etc. This pen is probably from the later period. It measures only 3.85" / 98mm capped, 3.58" / 91mm uncapped.

The Duro-Point 2R pencil was made in a similar period, the last of this model being manufactured in 1941. It measures 4.13" / 105mm.