When I sold a building that formerly held my machine shop (one of my lives before real estate) I provided seller financing to the buyer that could not have got a loan due to poor credit history. I told him that if he didn't default I would be the credit reference he needed to start rebuilding his finncial life. In a rather short time he was behind; we talked about it and he said that if we could move the due date by two weeks it would better match his pay schedule and I would be paid first before the money went else where. I agreed and reminded him of what had been said about starting to rebuild his credit. No more late payments and the debt was retired (paid in full). I did act as a credit reference for him once after that.
Sorry, I seem to have rambled off a bit from the thread. I was intending to reply that while holding this note I was contacted several times by prospective note purchasers. I would not sell as they wanted to deeply discount it and I was more interested in receiving the full, including interest, amount even though it was over a longer time. No idea if someone else had refered me to the would be note purchasers or if they just looked it up in the public records.