The answer is, no, of course not.
First of all, to came up to this conclusion, you have to check the things under real world conditions with a magnifying glass.
Finding a pristine dial at a 45-year-old watch is very rare. Usually it would often come along with oxidised index markers and case, because untouched for decades – a drawer find.
Your case was polished, that means to me it was used. Many of those refs, of course the used ones, show defects caused by moisture intrusion. Therefore the possibility of a cleaning is still there.
Moreover, as I stated initially, I would expect the accent grave for this period dials and I would have expected even a different font.
The last checks just confirm, that the print including the suspicious font seems to be authentic, as well as the case marks and the movement.
What have been the pristine version of the dial – the factory output – probably remain undiscovered until there will be such a drawer find.
One more recommendation, as far as I remember there was a golden buckle with your watch. This buckle represents about 1/5 of the value of your watch. If you change the strap, be always cautious about your 18K gold buckle. It should have the specific markings as well.