Bought this many years ago and worn it once. It was kept in my wardrobe forever.
Size should be a 50 although I see no tag.
Looks to be in excellent condition.
Measurements taken with jacket laid flat.

Chest

23.62 in
60 cm

Length

27.17 in
69 cm

Shoulders

19.29 in
49 cm

Sleeve Length

26.77 in
68 cm

Hem

21.26 in
54 cm