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                Stock Code WMM1931 |  | Certificate number 1313, dated 12th May 1931 for 1000 'A' shares of 2/- each 
    in this British mining company with workings in San Esteban and Guadelupe. 
    Issued to Joseph Alexander Thorburn, with the 
    actual handwritten signatures of M A Green, director together with that of the company 
    secretary. White certificate with ornate blue border.  Certificate size is 
    22 cm high x 26 cm wide (9" x 11"). |