This is the oldest wiring system I have ever seen, the whole house wired in black Vulcanised India Rubber (VIR) or Tough Rubber Sheathed (TRS) cable which the insulation crumpled when touched. Totally outlawed and a huge fire risk. Instant fail on any EICR inspection. Fuse boxes so historic I have never seen them in a domestic property. All been ripped out. Lath and plaster walls and ceilings all removed ready for a new customized layout and electrical system.