Is this bullion bars genuine

I had a free afternoon so I decided to go for a walk. The day was beautiful. The sun was shining, the birds were singing and there was a light breeze. A wonderful day for a nice walk. So I went alone. I went to some shops in the city centre but then I had enough of the shops and I went to the park which was a very good choice. There I met one of my friends I hadnt seen for a long time. So she decided to spend some time with me and we were going through the park alone. Suddenly we saw a poor man, a beggar who was sitting on one of the benches. I usually feel sorry for such people and this time was no exception. He didnt ask me for anything but I took some coins from my wallet and gave them to him. He looked at me and smiled. Then I notices something in his hands. That something was shining. It was a bullion bars. He gave it to me saying "thank you for the coins". Of course my first reaction was to say no thank you, I dont need anything. But he insisted. I look at my friend and said "OK". We walked away and then my friend asked me what would happen if this bullion bars had been stolen or something. How come that a beggar had something like that? I would like if I said I didnt think about that. But I decided to keep this bullion bars and I took it home with me.