Midway Bullseye - Leather Clutch washers

If you don't find the exact replacements you seek, here's something you may be able to adapt to your needs. This eBay seller has NOS leather clutches for a Bally bingo machine. I've got some of what I believe are the smaller (darker) clutch that I'm going to use to rebuild the control unit on one of my bingo games. (I say "believe" because I bought my clutches several years ago and I can't remember the eBay seller.) I just measured my clutches and they are 1.5" diameter, 5/16" hole, 1/16" thickness, so you would need to enlarge the hole. I'd ask the seller to confirm those measurements before buying. If I'm right, you would need two sets to get the 10 clutches you need.

ebay.com link: SET OF BALLY BINGO LEATHER CLUTCHES

Another source is a leather shop, I needed washers for a horse racing game, I went to the local leather shop picked up 8 of them for nothing, he cut them from scrap piece's of leather