Under-rated fuse question

[Nauris]

I remember those. They used to be fairly common in really old TVs.   A square or rectangular section ceramic bodied axial resistor, mounted vertically, either had a springy steel strip in a T slot up the side of the body with the top bent over in a loop and soldered to the top resistor lead which was a short stub, or there was a formed steel sheet cage round the resistor body with a similar springy strip at the top end.  The steel was typically tin or copper plated for solderability.  The solder joint to the resistor lead was made with low melting point alloy, and if you had to repair it after it had disconnected, it was essential to use a freshly cleaned soldering iron bit with flux but no extra solder so you didn't significantly change the alloy composition.

Like this one? Put the problem is, who makes them these days? Many times they would be useful but it seem that no-one is making them anymore.