I've used kodak selenium toner, this stuff: https://www.ag-photolab.co.uk/product/kodak-rapid-selenium-toner-1l/ https://www.ag-photolab.co.uk/product/kodak-rap

I've used kodak selenium toner, this stuff: https://www.ag-photolab.co.uk/product/kodak-rapid-selenium-toner-1l/ https://www.ag-photolab.co.uk/product/kodak-rapid-selenium-t... I've also used tetenal for sepia style prints, their sulphide toner. Not a metal toner, but produces interesting and long lasting prints, this stuff: https://tetenal.com/en/homepage/consumer-shop/black-white-chemistry/102025/sepia-toner-1-l https://tetenal.com/en/homepage/consumer-shop/black-white-ch... Tetenal make great C41 and E6 chemistry too if this is your thing.