I can verify this claim. Dale has the Lorraine prototype. This item on Ebay is not THE Lorraine prototype for sure, but seems genuine.
This is a pre-release developer box, a so called "black box" Amiga.. I hope that is clear by now.
What I'd like to know is, does this require a SAGE machine as a companion to be usable or will it boot up from an Amiga formatted disk.
The kickstart EPROMs look like quite an early revision, so they might contain only a bootstrap that can load stuff over the serial port.