WW1 ancillary buttonhole/badges

[GTB]

Am posting a few WW1 associated badges. I find that such items give a sense of atmosphere to the period just the same as contemporary photos and postcards do.
Display is not in any chronological order and, as always, comments are very welcome.

Row 1:
(a) On War Service 1916, brass women's badge, maker Wylie & Co London, brooch fitting
(b) On War Service 1915, g/m, 'K' J.R.Gaunt & Son Ltd London, buttonhole
(c) On War Service 1914, gilt and enamel 'Admiralty' version, W. J. Dingley B'Ham, buttonhole
Row 2:
(d) War Munition Volunteer, g/m with brass slider (cap badge?)
(e) Royal Ordnance Factory, 13; maker T.L.M. Ltd B'Ham, brooch fitting
Row 3:
(f) English Sewing Cotton Company Ltd, War Work, enamelled, maker Thomas Fattorini Ltd, Regent St Birmingham; brooch fitting
(g) Comrades of the Great War, gilt & enamel, J.R.Gaunt, buttonhole
(h) Disabled Exservicemen Assn, 1914 - 1918, gilt & enamel, buttonhole. (Note that Ex-Servicemen is written as one word)
(i) Officers and Men, 1914 -1918, buttonhole.

I would suppose that the brooched badges were worn by women, while the buttonhole badges by men.
Not all are numbered.

Would any of these be scarce?
GTB