Need help identifying pistons

Can anyone help me ID these? They are for sale locally, are a partial set and are cheap. Honestly I am kind of leery about buying them and am starting to think I should just buy a new set.....

They are supposed to be standard bore 440 pistons. Can anyone tell if they are cast or forged? Hypereutectic? Modified (tops milled?), model or part number?

Clearly they are kbs..... any and all help is appreciated, as always.