Thank you for your replies, Court and James. I really do appreciate your taking the time to offer your advice.
James, I am familiar with your method of estimating the instrument's weight, but for a variety of reasons I'd like to have the factory spec. For a smaller bass, it is surprisingly somewhat heavy.
And yes, Court, I would definitely like to see your photo of the knobs, if it is convenient for you to send. This is an attention to detail that I candidly underestimated when setting the original specifications for the instrument. I'd strongly recommend to future Alembic owners to put a bit more into your knobs - they really set off the instrument (as do the continuous wood backplates and trussrod cover). Yes, they do raise the cost, but you'll be glad you did!
Again, thank you James and Court. May God richly bless you both, Randy