[Phono-L] Need a Diaphragm for a Columbia Vivatonal Reproducer

[Bob]

I just purchased a nice Columbia Vivatonal portable.  It's a model 202 and 
was made in England.  When I played it, it sounded terrible.  When I opened 
the reproducer I found out why.  Someone had replaced the diaphragm with a 
piece of aluminum foil.  They didn't even punch a hole for the needle bar 
screw.  Unbelievably, it actually played; feebly but you could hear it. 
Does anyone know a source for a replacement diaphragm for this machine.  The 
original was 2 1/8" in diameter. Thanks
Robert Vuillemeot