This is an excellent reproduction which incorporates all the odd features of the original (construction, weave, colour, etc). I can see no difference when placed alongside my wartime examples except that the collars are an exact match for the shirt (try finding that with originals!.
As already mentioned on the reviews, order one size up. Shrinkage is minimal when washed.
In summary, I'm absolutely delighted with it and would recommend it to anyone (and I'm a really picky sod!)

Simms - UK

Recommend one size bigger but very good job

st-jean - CA

quick delivery , seems fine to me though havent put it against a real one , stitching is perfect good price.

fong - UK