metal piece?

at the end of my violin, is a metal peice that holds the black piece that holds the fine tuners, and just about everything! icant find the piece and i cant put it back together, what do i do?
brandie compton, February 2005


done
Is this an accoustic violin? First there is a "knob" (endpin) on the side of the violin, then there is a "string" (tailgut) with two swrews that are attached to the thing tailpiece the real strings are attached to.
Can't really get what is metal here on an ordinary violin. But it might be the whole tail-piece that is missing. Ask in a music store, it is easy to fix it, but you must be very careful not tomove the soundpost inside the violin. Good luck

Della Daul, June 2006