WTB: Somerset Simpson Brushes

Yes, I'm still looking for them. Just the usual monthly reminder that I would like to buy Somerset (pre-Vulfix) Simpson brushes if you have any you would like to sell. Brushes I'm looking for especially, to fill in the gaps in the collection, are:
55, 56, 57 Best
Beaufort 1 Pure
Commodore X1 Best
Duke 1 Best
Harvard 1, 3 Best
Major Best
Persian Jar 2 Best
Polo 8 Best
Polo 12 Best
Wee Scot Super
any Manchurian

Thanks.