Nice find!
Is there any chance of getting details on the reverse? Do they have any maker marks? Are they "stamped" or "cast"? the collars look to be very close to being a matched set (Left and Right Facing) the Badge with the "tangs" is from the 30's and up to WWII.
If you have a CCS, Officers HB that is waisting valuable space in your collection - - and needs a new home
-- please contact me!!!