I found this excerpt of an email from Art Randall from July 2003, when I asked him about couplers for the 0579:
The original couplers on 0579 were probably Towers (good luck finding any).
Failing that, the Sharon is the next best choice. Basically, it seems
that the late 19th century cars (like 4000 series box cars for example)
used the Tower couplers, and the early 20th century cars (all those built
in the 1903-1905 time frame) used the Sharon coupler. There should be
complete Sharons in Chama. The only thing you'll need to worry about is
getting the right yoke length, which shouldn't be difficult, either. I
think you have a single spring draft gear, which takes the short yoke.
- AJR
Edited 1 time(s). Last edit at 07/07/2019 06:45AM by drgw0579.