4 (5) band 5% resistor with superfluous black end?

It's a 10 ohm 5% resistor. Sometimes a black band, centered over the end cap, is added to make it more obvious which is the right-hand end.

The part appears to be a wirewound type, possibly designed to be fusible. A carbon film replacement might be a safety hazard.

It appears to be a wirewound power resistor, and I believe it's 10 ohms +/- 5% with the 5th band representing the temperature coefficient or reliability.

This will probably help: -

So, you resistor is 100 x 0.1 ohms = 10 ohms

The black band at the end implies there is no tolerance.