Thanks to the courtesy of the
(Thanks to Tom Lawson for answering my questions!)
This image is the same locomotive taken by the author about 1994 before it was moved to Calera by Heart of Dixie. I believe this is a Baldwin product.
You may check the Heart of Dixie RR Museum website, and I believe you will see that this locomotive has been cosmetically restored.
Any data that a reader can provide on these locomotives will gladly be posted with credit given.