vintage sewing machine keys? Old singer? 3 sided and 4 sided drawer key

Description

vintage sewing machine keys? Old singer? 3 sided and 4 sided drawer key.
Two are 3 sided and one is 4 sided as pictures show, I thought they were clock keys but from what I see they are for old singer sewing machine drawers, you learn something new every day! Pictures are on 1/4” graph paper for measurements
Please use photos as part of the description
I am not an expert in this or any other field
Please ask any questions you may have about any items in the listing
Returns only if I have misrepresented anything in the listing
I do Combined shipping if you buy multiple items
Thank you