A look through my collection now shows my only vintage watch to be a 40 year old 1665 as well! I'd wear that anywhere' it's serviced, sealed and tested ready for the next 40 years.
Have recently sold my 809 and 806 Navis, Speedy Pro, and several Heuers... I was careful with all of them it has to be said and a little bit of joy was perhaps removed from wearing them because of it.