British Aircrew Mk4 and Mk4A Flying Coverall
The pattern of the Mk4 / Mk4A is identical to that of the Mk2 / Mk2A, the only difference being the material and intended use.
Exhibit
1963 Mk4 / Mk4A flying coverall modified position of oxygen hose ring
The pattern of the Mk4 / Mk4A is identical to that of the Mk2 / Mk2A, the only difference being the material and intended use.