ISO of 25600 is correct. I wanted to shoot f/8. NR was in 2 steps - Adobe Lightroom Classic now has a superb NR which acts on RAWS. I then did final "polish" and sharpening using Topaz Photo AI.
ISO 25600, is this accurate? Count me impressed, very very impressed with the NR process you used on this. I enjoy the photo too and I see you’ve used this opportunity to rephotograph the lamp from CIC255. Second thought it does look slightly different. Paul