The Biro or ball-point pen is ubiquitous and so cheap today that we don’t spare a thought to its use. Once used it’s thrown away, if lost we don’t despair.
The price 55s, the equivalent in sterling of pounds 2.50. From a website I work out that this would be equivalent today to pounds 84.85, making it one fine pen indeed.
No wonder the ad states that refills are available and the whole implement can be serviced. Lovely typography of the trade name.