“C.&O RY.Co˙” – Abbreviated Left Pin – Sample. 2.475″ high x 2.300″ diameter x .580″ deep. In 1920 this lock and the high shackle variety #58 were made for C&O by Slaymaker. Only the high shackle variety was selected for service and this lock was never ordered. This is reported to be the sample that was not selected.