[Phono-L] Columbia push button lid release

[Ron L'Herault]

A friend has turned up a Columbia table top Grafonola, possibly a 50 that
has a push button lid release.  Unfortunately it is missing a bolt of some
kind.   It is the bolt that attaches the arm to the end of the long rod that
comes off the spring-loaded button at the front of the lid.   The missing
bolt looks like it goes through the lid.  

Do any of our members have a push button release on one of their machines?
Is it an aftermarket device or a Columbia product?   Can you take a picture
of the bolt and any associated nuts/washers and provide dimensions?

Thanks,

Ron L