This is an excellent example of an early Swan Self Filling Fountain Pen, this is the SF130 which was made in the UK and dates from around 1930.
The pen is made from Black hard rubber with two gold filled rings on the barrel and one on the cap lip. The imprint on the barrel is clear and legible and the pen is in excellent condition overall with some very minor marks.
The Fine nib writes smoothly and has a lovely light flex to it.
The pen has been fully serviced and is ready to write.