The video link is Brendan Begley of Ireland playing his Castagnari One row.
It is about 20 years old, hammered by constant use, he added a fingerboard extension because he has very long fingers...used on at least one CD which I have... he plays one row most of the time and two row C#/D.
Interesting play for sure. The left hand is almost never used. When it is used the gentleman, he just hold the buttons down. I think the accordion would sound much better with butt joints.
Perhaps I'll post another of him playing on a one row and another with C#/D..
BTW he's about 6 ft 4 in. and has huge hands... the box I smaller than the typical Cajun made box.
The Jewell on the Button Box site is most definitely the Pointe Noir if you are looking for a classic Cajun made box. It would not matter that Dick Richard used, or did not use, butt joints.. there's magic in his accordeons.
Years ago I ordered a box from him and shortly thereafter his wife dies so we put it off for a while.