This interview with Mike Marshall is what sparked my curiosity on Virzis:
Question from f5loar: Tell us about your battered and tattered worn Loar. When did you acquire it and do you know any history on it? Has it had any modifications over the years? Why do you like it so much over other mandolins you have played?
Mike Marshall: It’s a 1924 F5 Gibson Lloyd Loar. I’ll never forget the day I opened the case. I was touring with David Grisman then. Tony Rice, Darol Anger and Todd Phillips were there, and we all just flipped over it. So I had to figure out a way to pay the big ticket price at that time.
Todd Phillips and I took the virzi out of it one fool moon night shortly after I got it. We just took a long bent screw driver and a hammer and I held it while he banged the thing until it fell out (not recommended). But I have a recording of this event some place (NOTE: see audio recording below).
We learned after taking it out, that these things are actually held in with a metal pin on one of the three legs and the other two are inlaid into the tone bars so they are pretty difficult to remove. But we were determined.
Thanks Mike and Ken for your posts.