This is real nice early business card from the 1870s. It is from McCaddin & McElwee on Clay Street in Baltimore, Maryland. The front side is marked for Looking Glasses. The back side mentions Mouldings (room & cornice) , looking glasses, Picture and Advertising Frames. Size is 4-5/8" x 2-5/8".
 Lucky winner to pay $1.50 S&H in the US or Canada & $3.00 overseas  (all cards are very well protected). More than one card purchased can be combined for only one shipping cost (6 cards would still only be $1.50 shipping total for instance).
Good luck & thanks for looking !

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