Also, there are a number of die varieties that are planned circulation dies, such as changing the size of a date. Generally, one date size is less common than the other. I have another junk coin with a small date, rather than a large date. Many of these sort of die changes can take place at the outset of a new series. For example, in this case, an 1837 Seated Liberty Half Dime began with a large date, but changed to a small date later in the production run.
In this case, at grade AU50;
Large date - $475
Small date - $490
These mid-production date size changes can vary in rarity. Also, there are various other planned circulation die changes. For example, small and large rim lettering.