I have restored a 72 350 for a friend of mine. Pretty good running bike and I have no idea how much to ask for it. Looking for suggestions.

1972 CB 350 For Sale-100_1290_zps031e55f5.jpg
1972 CB 350 For Sale-100_1287_zps4e076f51.jpg
1972 CB 350 For Sale-100_1292_zpsf792c82a.jpg

I rebuilt the bike a couple of years ago and gave it back. They put a hundred miles on it, maybe, and it sat since. I am cleaning it up again and he wants to sell it. Any ideas of value? I know it is not original color, but I think better.