Waterbury Clock

Its an unusual clock it still winds up, and still chimes we cant read much of the paper on the back but we can read TUNIS Eight Day Spring, and that it is a half-hour, and it is manufactured by the Waterbury Company, but we have not been able to find another one like it to compare it too,the clock face is not in that good of a shape, but the case and the inner workings are not bad.