Jensen Caps!!??


Got hold of about a dozen of these caps from some old Tape Recorders. Just spotted "Jensen" and grabbed them!!! All are 0.1uF 400V...

I am wondering if anyone knows what caps they are. Maybe PiO?
Ext. Foil. are printet on them, and a max 85 degrees temperature. Possible just some Electrolytics then?
they have a "hollow" sound when I tap them on the sides. Dried out perhaps?

Are they any good for audio? They where mostly used around power switches and with the motor switch. (the usual series RC thingy in paralell with a switch...)

Sorry about the bad images, but I had to use my scanner!!!