Thanks to Veronika, China and Jim for all their input. As Jim has stated Philip Lehmann was at 22 New Street, Mold in the 1890s - he could possibly be using old cardstock - but why would he have a stamp more typical of the 1860s ? I have now attached a photo of presumably the gentleman's wife, showing the square corners of the card, on the off chance that her dress could perhaps confirm either of the dates.