I am pleased to offer this Antique Littlefield & Parsons Thermoplastic Geometric Double-Ninth Plate Half-Case! This case can be seen documented as #3-51 in the Berg 2nd edition guide book.
This black thermoplastic case has a geometric pattern on the exterior, and can hold two ninth-plate sized images. One of the slots retains its original paper backing, the other does not. The original brass hinges remain in place.
Measures approx. 4-11/16" W x 3" H