Value of mint condition first pressing of Sgt. Pepper?


I have a mint condition first pressing (I think) copy of Sgt. Pepper's Lonely Hearts Club Band.  Vinyl is shiny and plays flawlessly, jacket is shiny with few indentations, and insert looks like new.  Any idea how much it might be worth.  Also, any idea as to how much value something like this gains over the years?  I'm thinking of giving it to my granddaughter (age 4) for her to cash in when she graduates high school.
Any input will be greatly valued.Russ
rustler
Give it to your granddaughter with a note asking her to keep it, and actually play it. It has more sentimental value than anything.
It’s likely just a run of the mill press that may sound good. There are still a bazillion out there.
A Brit mono is the only version to discuss.Maybe a sealed US version might have some value, but it’s not gonna be an Antiques Road Show find.