WWII Interest - Unusual Edwardian Sterling Silver Ribbed Cigarette / Cigar Case 1905

This is an unusual Edwardian silver ribbed cigarette/ small cigar case with 4 internal compartments, hallmarked for Birmingham 1905 by maker A.B (unknown), in original leather case. It is of plain ribbed form externally and no engraving or initials. Inside reveals a gilded interior and 2 moveable plates to ,I presume, fill with more cigarettes or cigars. It has 2 later engravings on the 2 plates:- Diplomat Reg'd 474151 May the best of your past be the worst of the future Oct 15th 1945 This could be of World War 2 interest. Please check all the photos and if you would like more information please contact me and I'll be happy to help.