Buckle is removeable.
“Bachelor buttons” held in place with split ring (like keychain) and are removeable.
Layout is like standard Pattern 40 Battledress but in denim material.
More well-worn than Sample 1.
Buckle and attachment system has been removed. Neck closure hooks moved to base of button opening to keep bottom closed.
Original buttons replaced by sew-on buttons, likely of surplus origin by a civilian tailor.