Edwardian 1920's bespoke naval mess jacket size 38

For sale here is a very early doe skin mess jacket. The jacket differs from a later one is several ways. The date appears to be 1927 although I personally doubt this, it looks older. 

Measurements 

sleeve - 25.5

shoulder - 16,5

length - 22

Armpit to armpit  - 19

Fit - 38 reg

Condition - Excellent