do you have a collection of old coins, stamps, maps, ......

hi. i still remember, as a child i used to collect various stamps and stick those in a small note book. my brother used to collect coins..sometimes we used to exchange these things with freinds for their collections..kind of a barter system. but when we were moving out to new place, i gave my book to my friend. i still have this fascination for stamps..do you have collections of any old stuff ?