You've found a Mirro pressure cooker #394M handle for lid / top (replacement part #8891S - see fourth photo). This Mirro pressure cooker 394M lid handle replacement part has general finish wear, but is chip-, crack-, and melt-free. The original screw, with rust, is included. Choose a handle with a metal ring or without a metal ring.
More vintage pressure cooker replacement parts: https://lauraslastditch.zibbet.com/shop?&keywords=pressure+cooker
And hundreds more vintage kitchen wares you'll enjoy: www.etsy.com/shop/LaurasLastDitch
You'll love the Laura's Last Ditch guarantee: www.etsy.com/shop/lauraslastditch/policy
"Add Shop to Favorites" via the link on the right to get first dibs on more hard-to-find vintage kitchenwares from Laura's Last Ditch, then "Add to Cart" to make this vintage Mirro pressure cooker 394M top lid handle replacement part #8891S yours.
Need a vintage small kitchen appliance replacement part or instruction manual? Let Laura help you in your last ditch effort to get your small appliance running! Visit Laura's Last Ditch for 100s of hard-to-find vintage kitchenwares: www.LaurasLastDitch.etsy.com.