MG links, Samples?

[RCS]

Long time ago when I was a company armorer, we still had the Browning Model 1919A6. All the cartridges came linked, which was AP with a fifth round tracer.
Now the Model 1909 blanks came in 20 round boxes and if needed for training in the field, these blanks need to be loaded in links, so extra links where saved
from the ranges or field so the blank cartridges could be used. Not an easy job even with the small hand operated linking tool and the white fabric belts were
often used for loading the blanks, easier to load and the Browning's ran better.

Maybe the small boxes with links were for blank cartridges which were not issued linked ??