During the Franco-Prussian war (Sept 1870 - Jan 1871) the city of Paris was under siege. Messages were not getting through to the outside world as telegraph lines were being cut and couriers captured and, in some cases, killed. To overcome this problem an ingenious solution was proposed.
Our Stamps and Postal History of the World sale and the Uttama Series of Indian States: Part II are now live and open for bidding. See the most exciting lots from both.