Only messing, they should of course be stored, unopened, in your memorabilia room/cupboard.
It's unlikely your old auntie Jean would appreciate their awesomeness anyway. And that jumper she got you for Christmas was shit. You don't even like Dr Who and she doesn't deserve a thank you card. Bollocks to her.
The stamps.
They go on sale January 23rd but you should probably pre-order a set now. Don't want the lads down at Games Workshop doubting your levels of dedication...