I looked at the pics you have up on the auction page, and it is astonishing how much that accordion resembles my Bb Master accordion. Every thing looks the same: the color, the hardware, even the weird tape on the flappers and the frame.
It was stored by the first owner..and played on a few Zydeco tunes in his band..but otherwise wasn't played.
I have never tried a Master, but this one is light and has the finish and wood working of the older boxes.
Metal buttons.. the smaller, slightly rounded tops, I think are out of production now.
The ONLY reason I'm selling is because I have two Bb's now and one has to go. Will be selling a C box soon most likely.
This will be a collectors piece like the Magnolia or S. Mouton boxes. Hope it goes back to Louisiana.. it has a whole lifetime of playing in front of it.
Probably won't relist if it doesn't sell. I couldn't get the pics on eBay to enlarge ( due to format size ).. but can send close ups if needed.