According to my info the silver script came in three different serial number ranges: 57,000/68-70/76-79.
oops, sorry that is for a 2447N.
It all looks correct to me. The crown may or may not have been signed by 61000, the sweep hand has been replaced, so likely the crown too...typical for a 50 year old watch as during service watchmakers weren't concerned with finding the exact original part. Close was close enough.
Same goes for rehaut...its part of the crystal and was typically replaced during service. Most of the time its not a Heuer crystal thats installed, but a cheaper substitute. Finding an original Heuer crystal...is well impossible, but you should be able to find one that lines up correctly
The silver script dial is far less common than the white script...nice find.
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