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Make sure the solution used in the ultrasonic won't harm anodised aluminum and it will be ok.
If you want to clean the outside of the razor, some dishwashing liquid, water and a toothbrush should be enough.
Hard to say, most likely a Gillette clone.
Case could be a late Gillette pocket case, blade box is a "fake", the razors head could be an early (wide shoulder) Tuckaway/Milady, but the stamps doesn't look like Gillette ones, the handle is based on the Tuckaway handle, but is longer.
Hello, the case belongs to a Single ring, the lining of the sides are later replacements, original was silk, like the top panel.
New improveds are not aggressive, imho, more direct than later Gillettes but still mild and efficient.
I'd say the center rod or insert is worn out. The inside of the TTO knob is threaded, another threaded insert fits into it. The center rod sits in the insert and moves when the knob is turned. So it can't/shouldn't move around infinitely.
Some pics of a Slim, the mechanism is the same...
Hello, as far as I know British serials are not documented, but given the low serial I'd say it's most likely from the first year of production. 1921, if New improved production started in England that year. 1917 is the year when the patent was granted in England.
For the case, it could be...
TTO production in Berlin is highly unlikely during the 50ies-60ies. Lack of a made in stamp can be found on Canadian, French and German Gillette TTO-s, but it doesn't mean that these razor were local manufactures.
England produced enough TTO-s for the former empire, Europe an parts of South...
Hello, technically those razors are not Rockets. The No 54 and later No 54a sets were Rocket sets, the razors didn't have a specific name, like Aristocrats.
The German Nr. 57 set contained a razor called Parat (short for Rasierapparat), the same razor can be found in British No 54a sets.
I opt for India. Can't remember the name, but there was a Slim doppelganger with the exactly same base plate.
And imho this mish-mash of features (Super slim twist and Sticky) is also more prominent on razors made in India.