Yes Jerry, the garbage disposal is really that big - and an antique too! I would guess it to be about 18" long and HEAVY. It works great. We occasionally send a lemon down just to keep it smelling fresh.
And this too could be yours! As part of the plumbing conversion we will probably be replacing the kitchen sink and may or may not retain the garbage disposal since most of the time I try to compost the scraps. If you are interested in adding this lovely piece to your collection of antiques, please let me know.