Mexico, (San Luis Potosi) San Luis Potosi. 9 covers and front; includes straight line postmark in black (Yag-Bash SL2) on official cachet folded letter with "3" rate handstamp and on 1816 folded letter in red, straight line postmark (SL3) on official wrapper with "1½" rate and similar front with "1" rate handstamp, boxed date stamp (SL6) in black, blue and red, two 1855 oval date stamp (SL8) usages, one with "Franco" and other with "2" rate handstamp, 1856 fancy box date stamp (Schatzkes 1442) with "3" rate handstamp, Very Fine. Estimate  $600 - 800. $0 (Image)