Should I sell my bullion coins

A couple of weeks ago I found two old gold bullion at the bottom of my bag. I had just returned from holiday. I did not know where I had got the coins from so I simply decided to keep them as a nice souvenir. I am not going to sell them, or at least I was clear about it until yesterday. A friend of mine introduced me to his old schoolmate who is a collector of bullion coins. The guy has been collecting coins for over ten years. He has several albums of old coins that come from all parts of the world. He heard from my friend about my two old Spanish coins, so he was immediately interested. He has my phone number and has already called me twice to ask about the coins. But I have not decided yet. I have lots of souvenirs at home. They all remind me of the places I have been to. There are old vases and figures from Egypt, a nice kimono from Japan, a pendant from Jamaica and some precious stones from India. There are also these two bullion coins, which might not be worth a fortune, but I still want to keep them. I just become used to things quite easily, I can"t get rid of them just like that. I have a feeling that I won"t sell these coins, anyway. I want to keep them in my wallet, and be able to think of that holiday every time I look at them.