Edward (Eddie) Lincoln Unknown, Undiscovered and similar items

For sale is a very rare daguerreotype of, who I strongly believe to be (after extensive research), Edward (Eddie) Lincoln, President Lincoln's second son, who tragically died at the age of three from tuberculosis in 1850. There is one public, extant photo of Eddie Lincoln, which can easily be found on the Internet (included as the last two photos.) Please compare. The daguerreotype in my possession, which was purchased from an antiques dealer in Indiana (Abe Lincoln's home state as a young man) matches the extant portrait on several points, including missing hair from the left eyebrow, a growth on the upper lip, similar collar on clothing and very similar hairstyle. The photo in my possession was taken earlier than the extant photo, but one can see that this is a younger version of Eddie, and therefore, this one-of-a-kind portrait is an undiscovered, unknown daguerreotype photo of great historical value.