This unheadstamped version of the 10.4mm Vetterli cartridge shown was part of a batch 1,000,000 that were smuggled in April 1914 in one lot into the north east coast of Ireland (the whole island of Ireland was still part of the United Kingdom at this point in history) by the Unionist side. A number of 10.4mm Vetterli rounds were imported prior to this in 1913 and earlier. Most of these earlier rounds were headstamped ‘ES’, and they were very similar to the unheadstamped rounds. The cases were similar with a similar bevel on the head, similar small flat copper primers, similar large granular balls of propellant, and the brass jacketed bullets looked similar externally, although the ES bullet was flat based and weighed 275 grains, whereas the unheadstamped bullet was hollow based and weighed 250 grains. Both types of cartridge were supplied by the same gun dealer in Hamburg, and going by the similarities, both types of cartridge were manufactured by the same company. Below are some pictures showing both types of case head, a close up of the ES headstamp, a sectioned unheadstamped round showing the hollow base & propellant, and a comparison of the two types of bullet base.