Quick work on that one for sure; wonder if that junction box is available for purchase somewhere and meets local code?
I'm not actually sure that its a real junction box. ; It looks like the big circle is large enough to conceal one of the 90° bends that you see above and to the left of it. ; Also the ears appear to be separate pieces. ; Those two clues lead me to believe that it is just a decorative cover and not a real junction box and therefore probably wouldn't have to meet any codes. ; Either way, its still a really cool detail.