I purchased a set of identical-looking rotors from Spiegler in Germany some time back.
They have Spiegler (spelt correctly) SBT02 on them. Haven't run them yet as the Jota restoration isn't finished.
They look okay, but are much thinner than the originals. Don't let your brake pads wear down too far...
Personally, I think the Australian MetalGear rotors are the ones to go for, have had several sets.
They look original, work perfectly wet or dry.
Steve