I'm not sure about the builder either, but i think Le Capitaine Accordions are made by Danny Dyson out of Lake Charles. I bought some tickets for a box he made on Lake charles CFMA raffle and Danny Dyson seems to be the name for the builder. Again I'm not sure.
Danny made the one I am using now. Wonderful instrument. He is a great guy. He may still make a few if he is asked nicely. You will be happy with the price and the quality. E-mail me and I will give you his cell number.
JB
I have a fine box Danny made for me. He had been thinking about cutting back on building, so you need to give him a call and see what his buid schedule is. His number is on his website. WWW.lecapitaineaccordions.com