ok, yes, now I see, the "effect" -how the picture looks- does come from double blur lines.
The "original" treatment was a bit different as shown below in second picture
I have also checked again, what I did with the highlights/luminance of the yellow: actually the picture was taken a bit underexposed to avoid blown highlights, so I just increased the exposure a bit in ACR, avoiding the highlight indicator going red as the first picture without treatment shows (third picture)
(?How do I get the pictures within the text here?)