After exhaustive searching, I've finally found a chrome platers that I think will do a fine job on my frame, and on Friday I duly handed it over for a couple of weeks. I had a very welcoming reception at Premier Plating Works in Walthamstow. All the outward signs are that this is a great company that cares about every job no matter how small. I sincerely hope I'm right...
They're going to polish and then plate the forks (right up to the top) and the rear triangle up to the brake bridge.
All that means I have to start making some conclusions on finalising the colour scheme. As inspiration, I'm using this pic of a fantastic Bottechia, having found a very similar bike in the book Italian Racing Bicycles by Guido Rubino:
I'm not chroming the front lugs, but may just outline them... All comments or other suggestions most welcome!