The most obvious difference is the coin is valued at "HALF Dol." instead of "50 CENTS." A more subtle difference is noted for the reverse rims. The 1837 design did not provide much protection for the lettering on the reverse. In 1838, the rims were raised. Many type collectors don't bother with getting both of these minor types. It is included in the complete type set, however. Obviously this coin is not as nice as the 1837 half dollar I posted earlier. You can play "guess the grade" if you like.