WW1 British '08 Pattern Brace Attachments

Probably the rarest component of '08 pattern equipment to find today we recently found this pair of the 1908 pattern webbing brace attachments as used by machine gun crews, tank crews & Other Ranks in the Royal Flying Corps to name a few. Both are marked 'HGR' for the firm Hepburn , Gale & Ross with date 1918 . These are practically impossible to find & the only pair I have seen outside of a museum for a very long time.