Antique Topo Art on Metal Cases

I find that topographic items always sell well. People like things from and about their town or city. So I'm starting a new line of metal cigarette cases with antique birds-eye views of towns and cities all across America. These type of aerial views were very popular in the second half of the 19th century and nearly every town of note has an antique birds-eye floating around out there somewhere. Of course, many are quite rare.
First up are cigarette cases featuring views of Manhattan in 1874 and San Francisco in 1878. I like both of these subjects because they are so recognizable. Even 130 years later they are still instantly known. The very definition of iconic.