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Posted By: George Layne

Tintypes and daguereotypes and other " positive in the camera " images can be made unreversed with the use of a reversing prism or mirror. Such devices were readily available, written about etc. as early as the 1840s-50s. Any knowledgeable expert on nineteenth century images would be aware of this. Not all photographers used them, but a tintype could certainly be made unreversed.

George Layne, Philadelphia