Distribution and Special cancels

Quality: ✉

1862 N° 12 "40c. vermillion", on letter with contents, departure stamp is Mons, dated 25 April 1862, but the stamp is not cancelled on departure, letter is to Saint-Quetin (France), transported via the railway "Ambulantory Midi 1", while processing the letter, it was noted that the stamp is not cancelled, and is immediately cancelled in the office with P.24 (8-bars), f