The Esterbrook 'J' double jewel series was made in three sizes the 'J', the 'LJ', was about the same length but slimmer, and the 'SJ', this pen, was slightly shorter.
Introduced in 1948, the earliest pens, such as this example, didn't have the 'R' registration symbol on the imprint.
The pen, finished in 'Cobalt Blue', has a 'double grooved' design of the clip which is carried through to the cap band and the filler lever, all in good condition. It is a 'double jewelled' pen, with a black stud at the barrel and cap ends. The surface is first class, a good shine and clear imprint.
The pen has been restored and tested and is in excellent working order. The nib is engraved 'Esterbrook 9460', The '9' series nibs were known as the 'Master Point' nibs and are all tipped with Iridium. They were originally much more expensive than the standard 'Dura' nib. The 9460 is listed, in the comprehensive Esterbrook nib code document, as 'carbon copies, manifold'. It has a firm, fine point which was ideal for use with carbon paper but would also suit someone with small handwriting or for more detailed work.
At 12.2 cm. capped the SJ still has a very respectable 15.2cm. when posted and is very well balanced pen with a satisfying solid feel. The stainless steel trim, thick celluloid, and good build quality make the Esterbrook SJ very attractive, practical and durable pen.