Lincoln embalming

[LincolnMan]

We have mentioned the many times Lincoln was viewed after death (something like 16?)-and the accounts of the viewings all mention how his face had not changed very much. I don't know any morticians-and I don't mean to be gross-but what would Lincoln's face look like now? It is said that the embalming process turned Lincoln to stone. How long would that last? Perhaps this is a morbid curiosity- please forgive me if the subject is not worthy of consideration.