[Ron Ramirez]

Some folks stick new electrolytics inside the old copper cans - although opening them without damaging them, from what I have read, can be a challenge; others wire new electrolytics under the chassis and leave the Mershons electrically disconnected but in place on the chassis, "for show."

I am not aware of any Mershon that is still any good. At any rate, I've never owned a Philco that still had a working Mershon. On the other hand, I have come across a few 1937-era Philco aluminum electrolytic caps that were still good after 60-70 years. I don't keep using them, however; they get emptied and rebuilt with new electrolytics.