Al though not very clear, the collar badges would appear to be Pattern No 9966 which was sealed on 20th January 1882. This was superceded by Pattern 9966a on 21st March 1898. So possibly between those dates? Of course, I am well aware that the earlier pattern was worn past 1898.
Last edited by Nozzer; 16-11-21 at 10:37 PM.
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