My Dad’s (91?) Specialized Hardrock

My dad let me borrow his old Hardrock from what he believes to be from 1991. The frame is in mint condition because he’s the type of guy to keep his possessions in really good shape. He hasn’t ridden it in years and knows I’m into biking so he offered it up to hang on to for awhile. Suntour drivetrain/shifters and Sugino crankset. Honestly shifts and rides so well, he had it tuned up a few years ago at a shop but hasn’t really ridden it since. Obviously saddle and grips are different but I believe everything else is stock. Another funny thing is he is adamant I don’t change a thing. I was like “oh I could replace the stickers since they are peeling a bit” but he likes it being all original. Gotta respect it, super fun ride!