A couple of interesting pictures of Free State Army troops with Mk.I***s:
Third enlisted man from the left. Interesting to also note the officer wearing the old-style Irish Volunteers uniform with the tie and puttees and carrying two revolvers.
Kerry command, 1923. All three troops have Mk.I***s. Using P1907 bayonets and not the P1903 originally issued with the Mk.I series.