1.75" with clear circle of celluloid at the center over a bw photo. We just learned this is a sample employee badge and that it pictures Theron Bastian, a founder of Bastian Bros. Serial number below "355." Two pinpoint brown dots on the rim but o/w clean. Reverse has inserted sheet of silvered tin to hold the photograph properly in position. Tiny stain dots around the collet but these do not extend to the front. The earliest item we've seen for the Bastian Co. and the only I.D. badge we've seen in this early style. Rare.