I recently picked up a couple of 1872 sub offices that are not listed in the Handbook of Classic Mexico (Banchik) - a 12c Lagos/Ledesma (Banchik indicates no known Ledesma copies) and 6c Tampico/Soto La Marina (not known for this value/year). Can any of the experts on this issue answer the following questions:
What is the source of the information on sub office usage for 1872's in Banchik?
Are there any other good or more complete reference sources for sub office records for the 1872 issue?
Colin Deane, Toronto
