One of the razors collectors want to have is the Walbusch B5. Basically a Merkur Progress with a tilted head. This is a really nice razor, shaves great, as do all Progress, and it looks pretty too, be it with a bit clunky head.
A razor that is under-appreciated is the Walbusch B3. Same head as the B5, yet not adjustable. Razor is all plastic. Pollopas to be precise, kinda like bakelite yet different.
As the B5, this razor was produced by Merkur, who made their own version. I've found three models. V1 has a solid baseplate. V2 a baseplate where the holes for the guiding posts run all the way through. And a version of which I'm not sure if it was before or after V1 that has a solid baseplate with scalloped safetybar.
This is the razor I shaved with today.
Funny thing. I love the B3. It exists as Walbusch, Merkur, Eros, Zorro and then some, and they all shave terrific. Not strange as they share geometry. So when I picked todays razor out of the cabinet, loaded it with a blade (had seen some use), and lathered up, I was really looking forward to a great shave, as I'm used to with these razors. Much to my surprise: mediocre at best. Really weird, as this model normally sets the bar for what a great shave should feel like.
Maybe later this month with a fresh blade, don't know.