Fendrihan "Scientist" Full Stainless Steel Safety Razor.
Note that the head has an open comb...
The head is 43 mm long, which is the same as a DE blade.
I thought I had asked them about the length of the Mk II heads, and that they said they were also 43 mm but I can't find that reply now, so I'm not absolutely sure.
They do list both as being 111 g. I think a 2 mm difference (because others are typically 41 mm) would show up.
This three-piece looks like it has covered ends too.
"Fendrihan 'Lawrence' Closed Comb Safety Razor, Bulbous Handle"
(chrome plated brass head and handle)