This is a fantastic reproduction. At first I was concerned with the weight of the material but Jerry assures me it is correct. The 52 fits my 6'5" 265 lb frame very well. It is plenty long enough.
As far as I can tell every detail is perfect including the buttons under the collar for the hood (which was discontinued as an item of issue).
I'm certainly not an expert on these but I can't see how it could be improved.

Jon - US

Mine just arrived today. First Class!
I am 6'5" and 265lbs the size 52 fits perfectly.
I can't see a thing that could be improved.

Jon - USA Texas