Just so. Very nicely done. And a hearty welcome back!
I also want to offer a bit of an apology for the initial presentation of this riddle as "Boxed 126." Obviously, I had to do it that way in order to make the riddle fit the two word format of this thread. I knew it was much harder than "Boxed 47 and 79" but once upon a time I submitted to the group the riddle "79 Inter" which solved to "gold bury" - i.e. Goldberry. I was hoping that the collective memory of the group would quickly lead to the periodic table, which would have made it more manageable. When that didn't happen I knew the original riddle (Boxed 126) would be nearly impossible to solve, so I broke format and turned it into a four word puzzle. Since I also neglected to add the warning lable that it was a 1-2-3 riddle requiring an outside reference, even the four word version was devilishly difficult. Sorry about that.