Screw cups in wood on the doors

The screws that tie down the upper, horizontal bits of wood on the doors, have small saucers that sit in the woods angled holes.
On one of my 420G cars, these are too big. Bad replacements at some stage in the carś history.
Who might have these, in the correct size?
I need about 10 of them,

I found this place here in God’s country. I just googled “stainless cup washers”. Sure you will have similar. Paul

I found some at a leather supply store.

Perfect. Just ordered a set.
Thanks Ian.

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