This sixth plate was taken circa 1855-1856. The very rare hallmark was “Enslin Schreiber & Co”. I have seen it once previously, and the firm was actually awarded a medal in 1856 for their excellent plates. (I am curious why I haven?t held more in my hands). While I can’t be certain of the daguerreian, the highest level of perfection was achieved in the woman’s portrait. I thought that her fashion ensemble was also quite astounding. Lastly, for her advanced age, this woman still had the spark! She is kept in a complete leather case. All those spots are part of the encroaching tarnish. No way were we going to risk anything happening to this magnificent daguerreotype by attempting to remove the oxidation. There are also a few mold mites.