With such a mic, it seems that at some point, the only "U47" parts that would be left are the logo badge and the serial number badge. I understand that many of these have Blue capsules, and with a new transformer, different tube (and, as I understand it, entirely different electronics to work with that tube), as well as possibly a new housing tube and basket... exactly what makes it a "U47"?
If I buy a Blue Cactus, pry off the badge, and put a genuine U47 serial number badge on it, is it a U47?
Klaus,
the mic in the listing claims "serial #5557". Am I correct in thinking that would have been among the last U47s produced? In that case, it would have been Nuvistor-equipped, K47, and which transformer?