The subject is the final point in the Beginning Growers' FAQ (link at top of the page). Since you don't know what it is, I would encourage you to save and use the seed for yourself, if you like the finished leaf that you're producing. But since the bud heads were not bagged for protection from insect-borne pollination, your seed may not breed true to this year's plants. I would discourage you from distributing the seed to others, unless you have something really spectacular.
Bob