PP. I think that there is no problem with polishing your 5726. When you wear it just as a dresswatch then, there maybe arent many more scratches to come so it would be ok to polish your watch a bit too early. However, since you can only polish this watch 2 or 3 times, your watch is a bit to young for the first polish. So this takes us to the question what is going to happen to the watch in the future. If you really want your son to wear it one day, you could wait 5 more years and then do the first polish. If you dont have any kids or if they are wealthy enough anyways, i think you should just do what you want and that means obviously that you should polish it.