Need help identifying shower control and cartridge?

[dodada]

Single handle no markings any where. The seat rides on a cylinder and is concaved or valley shaped instead of flat. Been too every pro plumbing supply store and box store in town no help.

 

[rpm]

Send photos to orhttps://www.googleadservices.com/pagead/aclk?sa=L&ai=DChcSEwiphuyn-7_9AhVY6-0KHRkqDkkYABAAGgJkZw&ohost=www.google.com&cid=CAESbOD2qcYqitmT6j2rquG1e18T9WSE4Srz7-30BxFLA37MH34H9yglpROvP8_ppnmaKCDLCPjvdwrFRI4Y8pHXCEVFajbcPd3W7AgSFEvQ-YAU-edxgQVojwdGJG_rD9j8uZIG0MDW-o-jiVZcFQ&sig=AOD64_3vKoGqYXJyXTMirN2rFRIGG3upTg&q&adurl&ved=2ahUKEwixl-an-7_9AhUQh1wKHZJ8DX0Q0Qx6BAgIEAE match at Vhttps://www.googleadservices.com/pagead/aclk?sa=L&ai=DChcSEwiphuyn-7_9AhVY6-0KHRkqDkkYABABGgJkZw&ohost=www.google.com&cid=CAESbOD2qcYqitmT6j2rquG1e18T9WSE4Srz7-30BxFLA37MH34H9yglpROvP8_ppnmaKCDLCPjvdwrFRI4Y8pHXCEVFajbcPd3W7AgSFEvQ-YAU-edxgQVojwdGJG_rD9j8uZIG0MDW-o-jiVZcFQ&sig=AOD64_2uPL0TOObkoCo9oOyLrc59wlDCJQ&q&adurl&ved=2ahUKEwixl-an-7_9AhUQh1wKHZJ8DX0Q0Qx6BAgJEAE