I was recently able to add a copy of the Parisian Poney Poste stamp from a British stamp dealer. Janet von de Berg, an old-time US stamp dealer specializing in the unusual, had the following background story in a 1970´s price list:
“An exceedingly interesting but little known private post was set up in the French capital in 1893 to rush important letters from tobacconists ´ collection boxes to the railroad stations where the cought the night mail trains radiating out from the city in every direction. Small carts drawn by trotting ponies were used for the purpose, hence the official name of “Poney Post”. Black stamps bearing a poney´s head facing left and inscribed “Poneys Poste Abonnement” , were issued and were able at the tobacco shops at 10 centimes each, the fee per letter. These stamps were printed in booklet panes of 10, each stamp having 1 or 2 straight edges, and they were affixed on the letter front, commonly adjacent to the government postage stamp, both being voided with the regulation Railway Station Post Office cancelling block. Such an envelope adorn the front cover of Robson Lowe´s The Philatelist for July 1965”
The dealer goes on to offer mint copies at $4 each. A complete pane was offered at $40. According to the pricelist only 18 copies were available for sale. I contacted the library at the Postal Museum in Stockholm. They confirmed that the cover was shown on the July 1965 issue of The Philatelist. Unfortunately there was no further information about the Poneys Poste inside that magazine. Show here is a part of the cover which was mailed from the Gare du Nord (Northern Station) in Paris to a firm of solicitors in London in May 1893. The text under the photo of the cover brings basic details about the running of the Poneys Poste. Janet van de Berg (probably the pen name for Lowell Ragatz) certainly used The Philatelist for the background information about the Poney Poste stamp. There seems to be a preciously little information about this mail service in Paris (there was a similar service in London called Court Bureau).
As always I invite additional information from ATALAYA readers