You really do have some great and interesting badges , this thread is becoming a really useful resource for anyone who wants to learn more about this topic.
I've seen a couple of 1916 badges with their original covers (and one with certificate) but , as this was not my main area of collecting , I didn't bid enough to get them .
Regarding the four figure numbers , they must be very scarce when you consider that (according to the Tony James article) : "Over 270,000 “On War Service” badges were issued to women between May and December 1916."
I can't find any details of the total number issued up to the end of the war but most of the ones I've seen have six figure numbers and unlike the 1915 men's badges there are no "series" letters to indicate that when the numbers reached 99,999 a new "series" was started/issued.
Edit : Men's badges had five figure numbers.
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