Hello "Bora1978",
I track and record 2600 Sprint (and 2000 Sprint) information when I come across it. It is true that more has been found thus far about the Touring and Zagato examples, but this makes, to my mind, the Bertone even perhaps even more worthy of some study efforts.
More to follow if something more is shared.
Best of luck!
John de Boer
The Italian Car Registry (collecting and compiling Italian car and carrozzeria data since 1980)
What is it that you know and think you know thus far about your car? What is the body number? It should be visible in a painted area high up on or above the firewall and begin 140xxxx, maybe 1404xxx?