I have been doing this often on for about six months. I learned about it from a post I read on Steem. I started off with $200 and kept moving up to $1500, which is three boxes of half dollars. I try to do it every week but it ends up being more like two or three times a month. I would like to learn more about the logistics of the treasury because I have this fantasy that at the bottom of a big pile of boxes of half-dollars there are some really old ones that haven’t been touched in a long time. I have been thinking about ordering five or 10,000 at one time to see if getting lower in the pile produces more and older coins but I don’t know if they’ll order that many for me. One of the boxes I got last week had a date in April written on it with a sharpie, which makes me think that they use a last in first out inventory system.