You're welcome. The history:
The Attleboro Manufacturing Company had a subsidiary called Baer & Wilde producing men’s jewellery, which was incorporated in 1919. They had developed a hugely successful range of cufflinks (Kum-A-Part) in 1918 and focussed on those as their sole offering, with Attleboro ceasing to make women’s jewellery altogether. Swank was first used as a brand name in advertising from 1927 and by 1931 B&W were specialising in plates for Swank Collar Bars, at which time B&W ceased operating as a separate company and the Swank brand name took over. Then B&W merged with its regional distributors in 1936 to form Swank Products Inc. (renamed Swank, Inc. in 1941).
During that transition period, their items progressively moved from being “B&W” marked to co-branded “B&W Swank” and then only the “Swank” name.