The zippers do have patina but function well and seem to just be a visual flaw

With elasticated cuffs and a manoeuvrable body

many of which

previously worn and with general signs of use

Chest Size: 38" / Medium Slim - Label states 90cm

British Army 60s Mess Dress Jacket - Honourable Artillery Company - Small Double Breasted The zippers do have patinaAt a glance 100% Wool Body Fully Sateen Lined Captain's Rank Shoulder Pips Bullion Thread Parachutist's Patch Bullion Thread Artillery Officer's Patch Honourable Artillery Company Lapel Badges Manufactured by R. E. City Ltd. Black Body w Contrasting Scarlet Red Details Pit to Pit: 18. 5" Suggested Size: Small Regular Sleeve Length: 22. 5" X Short Collar to Hem: 19" Vintage Militaria Dated 1966 Genuine British Army MOD Surplus Grades Grade 2 Original