here is some info about the Inkerman whistle.
https://everything2.com/title/Inkerman+whistleThen there is this extract
"The Inkerman Silver Whistle and Chain
10. The Inkerman silver whistle and chain is worn by all Warrant Officers Class II, Colour Sergeants and Sergeants.
11. In 1854 the 68th Light Infantry embarked for the Crimea. At the Battle of Inkerman, the 68th fought without their greatcoats in the bitter cold so that they could more easily get at their ammunition. They drove the Russian Yakutsk Regiment from the field with the bayonet. There were heavy officer casualties and in consequence non-commissioned officers of the Battalion played a very responsible part in command and control during the battle. Warrant Officers and Sergeants of the 1st Battalion The Durham Light Infantry continued to wear the whistle and chain as worn at Inkerman. This distinction was later extended to all Warrant Officers and Sergeants of The Durham Light Infantry and subsequently of The Light Infantry. The silver whistle and chain is not on ordnance issue. They may be bought from RHQ.
The Wearing of the Sash
12. Warrant Officers Class 11, Colour Sergeants and Sergeants wear the sash tied on the right side. ..."
From:
https://www.lightinfantry.org.uk/regiments/li/li_dress.htmLike Lisa in California (hi Lisa!) I am wondering if this is a trainee or cadet. Other ideas is that he is wearing a 'dress' uniform as you'd wear to a formal mess function.
Then looking at how the whistle is to be worn it does look a bit odd the way it is in this picture.
'The whistle is short and tubular, and stays within a slot on the right hand side of the belt buckle. It is connected by a chain to a Lion's head boss located on the centre of the NCO's red sash. Inkerman whistles and their chains are made of silver.'
This one looks as if the whistle is tucked into the pocket on left hand side. There is a medallion/fob on the button band. My ex husband was a quartermaster/bo'sun in RNZN and he had a whistle but held on a white lanyard.
The fob part definitely looks more like ship's spoked wheel than a lion's head boss. The whole photo is giving me naval vibes.