Iwas fortunate to get my hands on some Korean springs for Cherry MX switches lately. These appear to be a high-demand commodity among keyboard enthusiasts outside South Korea.
These springs were acquired mainly for my Kinesis Model 100 project, in which I intend to have variably weighted switches in the key wells of my Kinesis contoured keyboard.
The difference in appearance between the two springs is subtle.
Besides the very small difference in the tone of the plating, the 62g version has fewer coils.