post #94840 was slightly weak filtered, and this was slightly over filtered :(
the next must be better :)

edit:
my basic processing idea is Greyc + NI (low freq only*), then apply 3 times for cleaning different noises.

for example,

1) Screening: [NI (chrome only) + NI (darken only) + Greyc + NI (low only)] with a mask from inverted greyscale background copy.

2) Bleed through: [Greyc + NI (Low only)] with a mask from greyscale background copy and reduced gamma of a mask into 0.5

3) Dusts: Greyc + NI (low only)

*not low only if I'd say strictly. I'm setting noise levels; high-100%, mid-80%. Y-30%