The Button Box has two Louisiana accordions for sale, a key of D Pointe Noir (Dick Richard) and a key of D Cajun (John Roger), details at first link

They have been there for a few months...

Both are excellent instruments.

Listed and recently sold there was a Miller and two Castagnaris.

The Castagnaris sold first.

Considering Richard has gone to the heavens and Rogers is no longer building these very fine instruments.. both would be a score.