Hmm.. maybe would help to see a better pic (of the whole circuit) if possible... it looks like it's glued in, but...

It looks like (hard to tell from the pic) you have a sand block resistor there - used to find them a lot in CB radios. The marking is confusing though, they'll usually be marked, say... 5W50(omega)±5% - 5 Watt, 50 Ohm give or take 5%.

Maybe if I could see the whole circuit... looks like there's an electrolytic cap behind it... other than that - it might as well be lego.

Worst case scenario... take it out of the circuit and measure it with a multimeter.

Bren R.