Advertisement for 'Byno' hypophosphates

This is one of a series of blotters that were sent out 'to the medical profession' by Allen & Hanbury Ltd., of Lombard Street, London at least once a month, often twice, with a different product advertised on each one.
Allen & Hanbury grew out of a firm founded by Silvanus Bevan in 1715 in a pharmacist's shop in Plough Court in the city of London. William Allen and Daniel Hanbury arrived later and by the early 20th century, the firm and its 'Allenburys' brand were household names. Their blotters were originally printed with attractive, hand-drawn brand name logos, a calendar for that month with other design elements or illustrations, in this case, rose leaves and thorny stems providing a decorative border.
Blotters were a popular form of advertising in the days when most people used fountain pens to write. They ensured that the owners would see the product advertised every time they picked it up to soak up the excess ink from whatever they had just written; the calendar ensured that it would be on somebody's desk for all of that month. 'Byno' hypophosphates were 'a valuable tonic for the aged and infirm when the digestive organs are weak' and 'an ideal tonic in nervous prostration and overstrain.'