Thanks for info and yes those look like a match , will measure minelooks like that one was welded at one time, no reason it couldn't be re welded properly . a bit pf a grind and a splash of paint & it'll work good .
but, yes a seacrh for lid support, lid stay , hinged support will return items
this looks close https://www.ebay.com/itm/233839107653?hash=item3671e59e45:g:uqgAAOSwNTZf6ram