Navitimer 8806 Black PVD Case circa 1975, came on a black white stitch strap originally, I installed a Vintage Breitling bracelet to it.

This is the second black case 8806 I've seen, both sold by the same AD, according to the now defunct navitimer.net 3 were made.
Also seen a Navitimer 1806 and 7806 in factory black pvd case