I know nothing about these watches but the logo on this example does not look correct to me. It looks to be out of proportion to the dial and the printing looks a bit thick / heavy compared to other Heuer’s of a similar age.
If I were in your shoes I would do more research first, it seems they can be a bit of a minefield, especially as this watch is a model that is not often seen. (I did not know it existed until you posted your other thread)
I hope some with more knowledge than me can help and hope you get the watch you are after