Help with identify varistor
It seems to be a part from Matsushita, which would now be Panasonic. 



I found a few parts with that logo and Matsushita mentioned, but can't find a real source for that.

@jonk mentioned that it is likely a capacitor and not a varistor.

There is a NS-A line of capacitors offered by Panasonic, which could be the successor for the NS you have there.