Ernst Leitz General Catalogue of Photo Equipment, Sept 1978, 15th ed F*S Books_And_Zines it appears that the base

it appears that the base had shrunk over the years as the red inkwell seems fixed

R&R Mill Smithfield

can easily support a large DSLR

The top has a zippered pocket and the bottom has two straps inside the case

This is British

Ernst Leitz General Catalogue of Photo Equipment, Sept 1978, 15th ed F*S Books_And_Zines it appears that the baseAn Extraordinary Compendium of every product manufactured by E Leitz in 1978. Detailed descriptions, pictures and part model numbers. Includes the entire range of accessories for Leica R and M systems, projectors, enlargers, copiers, even binoculars. 310 pages. 5 1 4" x 8 1 2 in. format. FREE standard shipping to the 48 contiguous United States