Summicron 2/9cm SOOZI First Batch lens head

Rare lens head for an extremely early M39 Summicron 9cm from the very first batch (100 lenses starting with no.1119001), in mint condition, optics only showing a few cleaning marks and a light separation, a similar lens no.1119005 can be seen in James L. Lager 'Leica an Illustrated History vol. II' on page 72, according to some sources, these first examples of Summicron 9cm were made in 1953 but were officially announced in 1957, Leica records show that this particularly lens head was never officially delivered!