1913 (31 Dec) registered cover from Nogales to Hermosillo, paying 20c Registered letter rate with 1c, 2c and 10c, used in combination with 2x1c Ejercito green, tied by cds, with violet Servicio Interior/Nogales and Certificato/Hermosillo pmks on back (Cat No. 322,323,327,347) (Image)

Est.$250

1913 (8 Aug) cover from Magdalena to Nogales, franked with 1c and 2c used in combination with Sonora Green seal 1c (2), v.f., with arrival pmk (Cat No. 322,323,336) (Image)

Est.$250

1913 (30 June) cover from Sonora to Nogales, paying 5c letter rate with pair of 1c and single 3c, tied by cds, v.f., with arrival pmk (Cat No. 322,325) (Image)

Est.$150

1913 (11 Aug) cover from Hermosillo to Magdalena, paying 5c letter rate with single 1c and two different types of 2c, faint toning, otherwise fine, with arrival pmk (Cat No. 322-324) (Image)

Est.$150

1913 (20 June) cover franked with single 5c type II (pos.C), used from Magdalena to Cumeral, Sonora, filing fold away from the stamp, fine and scarce single franking on cover (Cat No. 327) (Image)

Est.$250

1914 (22 July) Chinese merchant mail, cover with diagonal half of 10c used as 5c from Nogales to Magdalena, with arrival pmk on back, v.f. usage of Transitorio bisect (authorized usage period July 16-29, 1914) (Cat No. 358var) (Image)

Est.$250

1915 (16 July) cover from Sta Rosalia, mailed from an embargoed German ship "Harvestehude", franked with Coach Seals (issue for Baja California) 1c, 2c, 5c and 10c pair, tied by cds and addressed to Passau, one of 8 recorded covers sent from embargoed German ships during the Mexican Revolution (Cat No. 401-404) (Image)

Est.$750

1915 (July) cover from Sta Rosalia, mailed from an embargoed German ship "Schurbek", franked with Coach Seals (issue for Baja California) 10c, top sheet margin single, tied by cds and addressed to Germany, one of 8 recorded covers sent from embargoed German ships during the Mexican Revolution (Cat No. 404) (Image)

Est.$250

1915 (15 June) cover from Sta Rosalia, mailed from an embargoed German ship "Reinbek", franked with Coach Seals (issue for Baja California) 10c, tied by cds and addressed to Nogales, Arizona, mailed by Captain August Kohnke, one of 8 recorded covers sent from embargoed German ships during the Mexican Revolution (Cat No. 404) (Image)

Est.$250

1920 (1 Dec) 10c stationery entire envelope from Sta Rosalia, mailed from an embargoed German ship "Helwig Vinnen", sent via Guyamas, by Martin Vogel, First Mate, addressed to Germany, one of 8 recorded covers sent from embargoed German ships during the Mexican Revolution. The "Helwig Vinnen" left Sta Rosalia under tow on 28 November, 1920 (Image)

Est.$250