this liner helps to insulate and keep away the cold weather

please see photos for details

It should also be noted the back has been extended to make the jacket larger

but there's a bit of light mothing on the back / marking as shown

British Army No. 1 Dress Jacket - Royal Artillery Regiment - Medium 176/104 Communist this liner helps to insulateAt a glance 100% Wool Material 4 Front Flap Pockets Button Closure Engraved Royal Artillery Staybrite Buttons Hook & Eye Collar Closure Belt Loops Shoulder Epaulettes Rank Slides Bullion Thread Warrant Officer Class II Rank Patch Artillery Collar Badges Internal Lining Decorative Cuff Piping Dark Navy Black Colour Pit to Pit: 19. 5" Suggested Size: Medium Slim Label suggests a chest of 104cm Sleeve Length: 27" X Long Label recommends a height around