The Toggle is probably the most recognisable of the Gillette Adjustable Family.
The name comes from the "Toggle" mechanism that opens and closes the doors.

The most common versions are the "Red Dot" or "Standard" ones. They were made in two different years - 1958 (D1) and 1960 (F4) - the F4 been the slightly more common one.
Both were thinly Gold plated. The toggle was basically an idea that Gillette had for a "Quick" opening/rinsing. Unfortunately the wear in the area where the toggle and the handle meet is excessive and the idea was scrapped.

I have two Toggles, both a F4 and a D1.
The F4 was found as a miss-named auction and I managed to buy it at its low opening bid. Its in great condition.
The D1 was found locally and was "restored" by me. I have a few images towards the bottom of the page documenting it.

This version was redesigned and a second patent was applied for. That patent was granted on 3 May 1960 under patent number US2934821 (Click to see)

How do they shave?
The F4 is a mild to medium shaver.
When I reassembled the D1, I guessed at the gap and its about 2or3 notches above the F4 - so I find it a better.
I also guess that the fact that I restored it, I prefer shaving with it over the F4

Restoration of the D1 Toggle.
As I indicated above, this was found locally in South Africa and is only the second "locally found" one that I have heard of.
In March 2021, I received the first image, with contact numbers and price. Someone found it, went and saw the condition, passed on it and then send me the picture. Of course - The split second decision was to take it.

The first image below shows the bent doors and when I dismantled it, I found that the little shaft (insert) that holds the toggle in place was also worn. I turned a new small shaft out of brass and fixed what turned out to be only the one door.
When I reassembled it, I didn't have a set of feeler guages so I edu-guessed at the blade gap and it's a bit more than what it should be, resulting in a slightly more aggressive razor.

The top of the right image below shows it repaired and the bottom shows the various home made tools that I used to fix it

I read somewhere that the highest honor that we can bestow on a historical piece is to bring it back to life without erasing its past.
There is very little of the original gold plating left. I've considered having it replated (and I may still in the future) however my current thoughts on it are that it has seen more than its fair share of shaves and should wear it's battle scars with pride and secondly the replating process once done is never reversible.

I tend to favour more aggressive razors plus I guess that there is something of me in it, so I prefer the way it shaves and thus haven't dismantled it a second time to fix the blade gap.