Trawled through some old Bosley's catalogues and found said item.
Sold on 1st December 2010 and my note at the time shows it sold for £5600.
Cavalry frame.jpg
Just in case the text below the picture is illegible, or can't be enlarged, briefly it states that the collection was put together by The Bandmaster of 11th Hussars in 1900, who purchased the badges directly from Army Stores.
Hugh King bought it for £55.00 in 1955.
Regards.
Brian