Ambrotype of Woman in Half a AP Critchlow & Co. Molded 1/2 Plate Union Case V25

This antique Ambrotype photo of a woman comes in half of a molded resin A.P. Critchlow & Co. 1/2 (4.25 x 5.5") plate Daguerreotype union case. The case is 5 x 6 1/8 x 1/2'' overall. There are a couple of light scuffs on its exterior.