1844 (17 July). Mazatlan - UK. Forwarding agents via British Mail. E endorsed Sengstock Schütte / Mexico DF 22 Aug 1844 / fwded / to Brünner & Büssing at the Mexican P.O. in Veracruz, were posted and handed to Veracruz BPO. Per RMSP Severn, departed Verac