I like the texture you brought out there donkey. Good call. I toyed with putting some blue/cyan back in there but decided to leave it the yellow/rusty instead. Good edit.
I pulled the saturation curve in HSL mode, which is available in Photoline 32, but not PS or Gimp. I like how this emphasizes the oily/rusty colors, but I also like your take on the yellowed porcelain.
all I did was place your version on color mode and a duplicate of the original on saturation mode, pulling back the saturation mode's opacity to adjust...
sharpness/texture was achieved by a highpass filter on overlay mode with a radius of 3.5 (perhaps overkill). I'd probably mask out the hilights on the overlay adjustment layer if it were mine.