I have had the pleasure of owning one of the copper faced models for close to 20 years. I agree that they are almost a classic in their own right today.
However, I have recently purchased a 3547s, and have found that there are a number of subtle differences between the watches that are not evident from pictures on the internet or my recollection of handling similar watches for a short period of time.
>The lugs are slightly longer and fatter on the outer facet.
>The handset is longer and thinner and the dial print is smaller, which has the effect of enlarging the dial. It makes the sub dials appear both larger and further apart, although of course this is partially because of the lack of the outer decimal track on my watch (although refer to the 2447d comparison pics above which has a similar effect)
>The older watch is a touch thinner
I would unquestionably recommend a reissue as a good purchase, but IMO the original is a slightly superior design in the details. Well done jack - years ahead of its' time.
edit to add... my biggest annoyance with the re-issue is the decimal scale inside the minute track. It is useful (probably more so than a tachymeter), but it can be quite confusing to read the minutes due to the slightly smaller hands