I have a bag of this vintage roller ball bearing catches.

These were in an oily bag for over 50 years and the box totally perished, I took them out and degreased them 6 odd years and put them in another bag.

depth is 13mm hole size 10mm

50 balls 53 catches. They are pure brass not coated, so have tarnished a little because I didn't have any oil to spray on them and I figured wd40 is not the right oil to coat these in.
I tested 1 catch by polishing it with 5000 grit, it come out nice and bright.

my father made furniture amongst other things when I was a baby, these are the last of his things.

Hopefully someone can get to use them.

Thanks for your time.