This B&N chisel is the first I’ve seen of this brand. It’s a typical Swedish-style beveled and tanged bench chisel with a plan birch handle.
The hoop at the top of the chisel handle is missing and the ferrule on the bottom of the chisel appears to be smooth steel.
There is no visible stamp on the front of the blade. The back of the blade has “B&N” enclosed in a circle on it. To the left of this mark appears to be a stylized lion standing on it’s rear legs and touching the circle. Below this mark and the lion is a branch with leaves. The bottom of the mark reads “SKILSTUNA” | “SWEDEN” indicating that it was made in Eskilstuna, Sweden.