The title of your message is unusual. I admit that I actually prefer a nice looking woman.
Going into the text of your message: The Nikkormat FT was made from July 1965 to August 1967. The first one was FT 3100001. I do not see an ending serial number in my references. The replacement Nikkormat FTN from October 1967 begins with FT 3500001. The FTN had a much longer production run until March 1975.
The date of January 1992 "stamped" into the film door probably is a repair date or something equivalent.
As Ralph says almost certainly the date of a service/repair. With Leica's they leave a pencilled initials etc & it's often possible to find who did the service.
We'll let you carry on dating the camera Don't lead it on