SPCo. Southern Co. date code, 1 92, (either first quarter or first month of 1892 ?), oversize early car lock hand cast and made in the Sacramento shops and hand assembled. Strong springs, lots of patina, heavy brass clevis with 7 links of hand forged chain. Excellent. These locks are often dug along the sprawling Southern Pacific right of way, but almost all are in horrid condition. This one is THE BOMB!