I was looking through Ebay for medals and found one, which I suspect maybe real but not the ferrotype. Sometimes when a civil war artifact dealer receives campaign medal without a ferrotype, they will paste the picture in and this medal looks like a pasted picture. The difference in worth between having the ferrotype is close to $800. link to medal http://www.ebay.com/itm/LINCOLN-HAM...1053?pt=US_Fine_Bracelets&hash=item336ee2ac1d
Where exactly would the dealer then get those ferrotypes, if not from another of the same medal? I don't think there is anything to worry about with this one.
I had a dealer tell me that the medal came in without the pictures. To make it more acceptable for a buyer, he pasted the picture in. However he also did not mirepresent it as real and priced it at $150. The real campaign ferrotype can sell for $1000. My point is that the pictures do not look like real ferrotypes which are much darker. To me they look like pasted pictures.
I see, I thought you meant original ferrotypes pasted in to a medal that they did not originally belong to. Fake ferrotypes are a whole different matter.