Thank you in advance

https://postimg.org/image/nd1y44lmt/

It's hard to know without seeing the original, but I've applied a curves command and sharpened to get this. So maybe reverse engineering those two moves might take you in roughly the right sort of direction. And maybe adjust the saturation a bit too. Obviously these are global treatments, whereas the original treatment might have involved adjusting colour and tone ranges separately, or perhaps masking separate areas. We can only guess really.