STAMPS OF PRIVATE POST
For the handling of correspondence in town, as well as in difficult historical periods, private postal services were operated, with their own stamp issues. Such private postal material is accepted, when private service is activated whenever there was not any official postal service, is authorised or tolerated by official authorities, or it is active in total absence of any official post.
(Northern Italy )
Private Society "Coralit"
Private Society of Italy, known as "SABE" ("Societa Anomima Barbera Editore)
German private stamps of various towns
Russian stamps of private post, known as "Zemstvos"