Final decison:
First I want to thank everyone for their views, suggestions and comments. My initial idea in starting this thread was to help me in deciding what to do since I did not want to cheat either of us.
Next, the input from those here helped me in that I called the old man this morning and had a chat with him about past times, past deals and past friendships. I brought the gun up to him during our talk and told him of the conversation I had with his grandson.
He told me that I had bought the gun from him for $300 and NOT $200. He also said he was not needing the money when he sold it to me but was clearing things out as he was moving to a smaller home and got rid of many things.
Then he told me about the grandson. According to him, the grandson is manipulative and tries to get money from family members all the time (even though his father is a millionnaire) and the kid is up to his rear in debt for cars, ATVs and partying. The man said that if the gun had been meant to belong to any of his grandkids, he would have willed it to them. Then he told me to NOT sell the gun to the kid since the boy would sell it off the first chance he got to either pay notes that his father would not pay for him or give him the cash to buy something else.
Decision made but not by me. It was grandfathers decision. The gun stays here.
Thanks to all.
