I have always envied Max Ravenscar's calling card, as described by Georgette Heyer in Faro's Daughter. It was a plain card that just bore the words "Max Ravenscar, Esq". At the time - the late 18th century - such a card would have been hand engraved and printed on cream board. I was pleased to find that Mount Street Printers and Stationers could make cards of this sort, so last time I was in London I ordered some, and I picked them up on Monday. Mount Street have done me proud:
If you click on the image you will see a magnified version which shows clearly that it has been hand-engraved. What you cannot tell from the scan is that the print is slightly raised - the sign of proper engraving. I decided to go without the "Esq"; I understand that in some circles it is taken as indicating that one is a lawyer, which I am not.
In Max Ravenscar's day everybody would have known how to find him, so an address would have been unnecessary, and of course, with the exception of Bertrand Saint-Vire in Devil's Cub, nobody in Heyer's books had a mobile, or indeed any other sort of telephone. Even I must occasionally accept that times have changed, so the back of the card carries all the necessary details.
Oscar Wilde wrote that "three addresses always inspire confidence, even in tradesmen", so in this case we have a street address, an e-mail address and a url - although you already know the last of these.