AJ, i have a 57 witht he same problem, but 2 broken springs. one like yours and the other broken close tot he circle spring part or it.
i am going to get some rod the same diameter, overlap in both directions, then lightly mig or tig them together.
i have heard from another member here on the bolt that you could also get some donor rod, overlap, tie up tight with tie wire, and JB weld them together. he said that worked like a charm.
hope this helps.
leonard