Was left a huge stamp collection from when my Dad died, it was left to him by my Grandad. There are 10s of thousands of stamps, some very valuable, some 2 a penny. Thing is I really don't have the first clue about how best to sell them on. They are mostly all Polish, so not the easiest to find out info on, does anyone have any clues? Or is it worth taking it to an auction house and see what they say? Any help would br very greatfully received