Inherited Datejust 1981

[Big Sal]

My father purchased his Datejust in 1981 and wore it continually until the late 90's. He then bought a Casio 'work' watch and only wore his coveted Datejust for dress. Sadly my father went to be with the Lord on January 9th and I was given his Datejust which I have admired since the day he bought it.

I was torn between wearing it or putting it in the SD box as a memory. It fits my wrist perfectly and after wearing it a day or so I am convinced I would like to wear it as my Dad did. Each time I look at it I am reminded of the immense pride he took in the watch.

I do not believe my father ever had it serviced and at present it is -2s/day slow (not a problem to me). I am most reluctant to have any work done on the watch as I do not want it polished, I do not want the acrylic crystal changed, etc. Basically I want the watch to remain 'vintage' and am concerned that any 'servicing' will give me a new watch taking away its vintageness (how's that for a word). I might also mention that in the past when I have had watches serviced they are worse after than before.

Here is the rub. I like to wear my watches in most all activities except when damage is imminent (oil changes, and other car repairs etc). I go to the gym at lunch and never leave my watch in the locker or at work so I must shower with it. Is it likely that this watch would still retain water resistance to showering, sweating etc.? Would you take the chance? The crown screws down quite smoothly so I am thinking showering would likely be no problem.

Thank you in advance for your help. Sal