I was intrigued as to the identity of the "two elderly men", as stated in the film description, and managed to find a photograph of these wonderful craftsmen.
They are in fact the Helweg brothers, the last generation of silversmiths of this great dynasty.
In the foreground is Hendrik Roelof Carel Helweg jnr. (born 1887, died 1972) and behind him is his brother Carl Hendrik Helwig (born 1893, died ?. This photo was taken in 1953.
I believe both the brothers retired when this very long established business closed its doors for the last time in 1965.