Having decided that a JB Champion, 1035, 1039, 1171 and Omega mesh isn't enough for three Speedmasters I'm starting to look for a 9 row BoR braceket having being rather taken by @Barking mad 's recent WRUW pic.

There seems to be two references, 1503 and 1037. I can't see a difference. Am I missing something or are they the same?