I believe this is a visiting/business card holder. Could someone confirm, or offer an alternative description?
Size is 3 1/8" (8 cm) by 2 1/8" (5.4 cm). Elasticated band retains some elasticity, but has lost some of its original tautness. Initials on the front of the case are those of my father.
Birmingham hallmark, date stamp indicates 1930.
The maker’s mark, B&W LTD, could be Burtons & Waters or Bacchus & Whitehouse, or some other maker. Does anyone know for sure? The attached image is borrowed from here silvermakersmarks.co.uk/Make … ham-B.html .