I received my new Gillette Super 84 Adjustable today. It is a U4. That makes it from the fourth quarter of 1974. It was pretty clean, but I gave it a soak in hot Dawn water and a good scrubbing with a toothbrush. It did not need any polish. All the parts move freely, the doors open and close nicely, the quarter turn works well, and the adjustment ring works freely. This is the short handle version of the Black Beauty. This month is "Anything But Gillette DE" month, so I will be putting this into service in May. I look forward to that. The eye candy in the pictures is my Bunny B-400 Brush by Tom with an Omega 49 boar knot.