Gryphon Zephyr Replacement Fine Diamond Blade

Q: Would this replace the blade on an older plain Model C band saw?

This one would not work. However, this one will https://www.amazon.com/37-C-40-Stainless-Steel-Blades/dp/B01M5H7EYG?ref_=ast_sto_dp --- it also would help if we seen a picture of the exact bandsaw that you have. You would have to go to our website and get in contact with our customer service reps to be able to get a for sure answer on which blade that you would need.