Vintage hydraulic brake wheel cylinder repair parts , these Allstate brand parts were made by Sears Roebuck and Co year’s unknown but I’m guessing 40s or 50s
What you are getting is the vintage box great for display in your shop or man cave.
In the box is 2 metal cups with threads for adjustment and a return spring and instructions
NO rubber parts included this is only a partial kit NOT COMPLETE FOR REPAIR