There was a seller on egun that had acquired all of Diana’s showroom cutaways and prototypes from the Rastatt factory when it closed down.
He bought it as a massive job lot and was gradually selling them all off on egun. (Diana verified this when I was researching my cutaway mod 6)
He had a lot of mod 6’s and 5’s with various early wood grips and tapered barrels.
Although he was selling them as Diana’s a lot of them didn’t have any markings at all.
Matt.