If you compare the reproduction with the original, you'll notice (a) the printing method of the reproduction is lithography instead of recess-printing, (b) the reproduction has a grid of dots extending into the margins, which I'd call
burelage if it were printed separately, (c) the vignette in the reproduction doesn't overlap the frame and (d) the perforations of the reproduction are comb perf 13¼ × 13, not line perf 12. Also (e) the reproduction looks quite blurred, but perhaps your scan is low-resolution.
For me, these little details are what make stamps interesting!
In case you haven't got the original or anybody else is interested, here's my copy of the 1945 version:
