Hi all I am a new subscriber from Australia.I am also an amateur frame builder.I have a question regarding a frame in my possession.I believe it is a Bertoni or Bertony.It has been repainted and the original decals removed.I believe it to be made in Italy in the early 80,s.It has KL 50 stamped in the BB shell leading me to believe it is made from Columbus KL tubing.It has Columbus engravings in both the fork crown and the top of the seat stays and has drilled out drop-outs.Can anyone tell me anything about the builder of this frame.I would be keen to build it up as a vintage bike if I can find out more about it.Hope to hear from someone soon, Geoff Duke