I have several of the Wagner cast iron E bread stick pan, which was manufactured between 1900 and 1940 in Sidney, Ohio. It measures 15″ handle to handle, and it is 7-5/16″ wide. The cups are about 3/4″ deep. In addition to the ones listed here, I have another separately listed because its markings and size are slightly different than those herein. You can find that listing here.
The pan has 11 slots for bread sticks. It is marked on the bottom as shown in the photos: E BREAD STICKPAN WAGNER WARE SIDNEY, OHIO 1326.
These are lovely pieces. Each has been cleaned to bare iron and heat seasoned with a mixture of Pam and Crisco vegetable shortening. They are ready for use and display!