Columbia Grafonola

[Dan]

Good Morning, 

I recently acquired a Columbia Grafonola TypeE-2( as far as I know from research). After I removed motorboard , tonearm etc for transporting. I found these 2 cup like washers in the horn compartment. I didn’t hear anything fall while disassembling but found them . Are they part of this machine or something random that fell in there? I couldn’t find any info about these washers. I also posted this on the TMF. Any help would be greatly appreciated.

Thanks

Dan