Full-length trousers of dark blue serge, pleated from the cuffs and featuring a button fly with hook and bar closing, four brace buttons to the front of the outer waistband and two to the rear of the inner, vertical hip pockets and a 1¾ in wide scarlet stripe running down over the outer side seams. The rear waist of the trousers is tailored higher than the front with a central notch, while the cuffs are cut at an angle so that the front is shorter than the back.
As stipulated by the 1948 Dress Regulations for Royal Marine Officers, the Blue Serge Trousers could be worn as part of Ceremonial Dress, No. 1 Undress Order, No. 2 Guard Order, No. 4 Mess Dress or No. 6 Dress. The width of the scarlet stripe over the outer side seams depended on rank, with General Officers having a 2½ inch wide stripe, Colonels and Brigadiers a 1¾ inch wide stripe and all other Officers a ¼ inch wide stripe.
JOHN JONES & CO. LTD
33 BRUTON STREET, MAYFAIR
[below is all handwritten]
Lt. F. C. E. Rye RM