Gerber Plumbing Parma Valve Trim Kit with Treysta Cartridge

The product looks beautiful, had no idea it's a mirror finish too! However I was hoping it came with the 2 screws to get the face to the valve assembly since the current one I am replacing is 30 years old and the screws were so badly rusted I had to use pliers to remove them. If someone from Gerber is reading this could you tell me what size and threading I need before I make a trip to the hardware store? Thanks

Gerber bought Danze. Wanted to replace an old handle. Short of changing the whole valve, you need to buy the same brand. This was as nice if not nicer than the other major brands