WTB: Columbia Graphophone type BC gear cover

[phonospud]

I know it’s a long shot but does anyone have a gear cover/identification plate for a Columbia BC “20th Century Graphophone they would like to sell?
I have a machine with one missing.
My machine actually has had a four minute attachment installed unlike anything I’ve ever seen on one of these machines. It’s possible it’s a period made attachment. It is done very well. I would like to remove it and reinstall the missing plate putting the machine back to its original configuration.
If someone was interested in the attachment, maybe a trade is possible (?) I will try to get photos later today. Thanks for looking!