What about 'the Fatboy' do I hear you say?
Gillette used the name "adjustable one-piece razor" or "195 Adjustable" on what has since been dubbed the "Fatboy". The blade adjusting dial has 9 clicks and is located at the top of the handle. The name 195 indicated the original sale price of the set, $1.95.
The Fatboy was produced in the 'date code' era, when Gillette stamped a letter (year) and number (quarter) on their razors - so we can now tell when it was produced. The Fatboy was produced between 1958 and 1961. While I have a D3 and D4 (the earliest Fatboys) in cases this is NOT those!
Mr-Razor has the usual great photo -
Read all about the Fatboy and its history
here.