[captainclock1988]

Be careful with those. It's not just that one. I've found that, for some reason, the leads on all of those old mica capacitors tend to be brittle. If there's enough of a lead left I've been known to extend a lead by coiling/soldering a wire around the "stump".

That's a good idea and I would try that but unfortunately the lead broke off at the base of the capacitor where the lead enters the capacitor's body, so there's nothing to attach extra wire to. 

So I just need to order a new replacement capacitor or see if I can find a NOS one on fleabay.