I too believe it is a Fernandes bass. Buyer beware!!!! I think we need to see a pic of the inside of the control cavity. It will tell all. Note the pickup selector knob and the position of the knob. Very Fernandesesque. When I first saw the listing, I was hoping it was real. I am kinda in the market for another Alembic. Hoping for a Polane finished, single truss rod, small body bass. Yuk. Fernandes.
By the way I believe that an Alembic with serial number 922 would be a 1978.